| DisplayName | ID | Target | Category | Enabled | Alert Generate | Accessibility |
| The required SCOM hotfixes for Exchange MP are not installed. | ExchangeRequiredHotfixesNotInstalled | Microsoft.SystemCenter.HealthService | Custom | True | True | Public |
| Forensic: Overall Health | Microsoft.Exchange.2010.ClientAccessActiveSync.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.ClientAccessActiveSync | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.ClientAccessAutoDiscovery.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.ClientAccessAutoDiscovery | AvailabilityHealth | True | False | Internal |
| NonServiceImpacting: Overall Health | Microsoft.Exchange.2010.ClientAccessAutoDiscovery.NonServiceImpactingOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.ClientAccessAutoDiscovery | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.ClientAccessExchangeControlPanel.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.ClientAccessExchangeControlPanel | AvailabilityHealth | True | False | Internal |
| NonServiceImpacting: Overall Health | Microsoft.Exchange.2010.ClientAccessExchangeControlPanel.NonServiceImpactingOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.ClientAccessExchangeControlPanel | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.ClientAccessFileDistributionService.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.ClientAccessFileDistributionService | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.ClientAccessImap4.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.ClientAccessImap4 | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.ClientAccessInformationWorker.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.ClientAccessInformationWorker | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.ClientAccessOutlookDirectory.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.ClientAccessOutlookDirectory | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.ClientAccessOutlookLocalServer.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.ClientAccessOutlookLocalServer | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| NonServiceImpacting: Overall Health | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess.NonServiceImpactingOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.ClientAccessPop3.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.ClientAccessPop3 | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.ClientAccessTestConfig.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.ClientAccessTestConfig | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.ClientAccessWebServices.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.ClientAccessWebServices | AvailabilityHealth | True | False | Internal |
| NonServiceImpacting: Overall Health | Microsoft.Exchange.2010.ClientAccessWebServices.NonServiceImpactingOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.ClientAccessWebServices | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.CommonActiveDirectoryAccess.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.CommonAllServerRoles.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.CommonAllServerRoles | AvailabilityHealth | True | False | Internal |
| NonServiceImpacting: Overall Health | Microsoft.Exchange.2010.CommonAllServerRoles.NonServiceImpactingOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.CommonAllServerRoles | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.CommonDomainController.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.CommonDomainController | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.CommonFileDistributionService.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.CommonFileDistributionService | AvailabilityHealth | True | False | Internal |
| NonServiceImpacting: Overall Health | Microsoft.Exchange.2010.CommonFileDistributionService.NonServiceImpactingOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.CommonFileDistributionService | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.CommonServer.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.CommonServer | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.CommonTransport.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| NonServiceImpacting: Overall Health | Microsoft.Exchange.2010.CommonTransport.NonServiceImpactingOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.CommonTransportAgents.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.CommonTransportAgents | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.CommonTransportLogSearch.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.CommonTransportLogSearch | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.EdgeTransportAgentsAddressRewrite.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.EdgeTransportAgentsAddressRewrite | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.EdgeTransportAgentsAttachmentFilter.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.EdgeTransportAgentsAttachmentFilter | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.EdgeTransportDsn.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.EdgeTransportDsn | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.EdgeTransportMessageSecurity.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.EdgeTransportMessageSecurity | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.EdgeTransportQueues.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.EdgeTransportQueues | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.HubTransportAgentsMessagingPolicies.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.HubTransportAgentsMessagingPolicies | AvailabilityHealth | True | False | Internal |
| NonServiceImpacting: Overall Health | Microsoft.Exchange.2010.HubTransportAgentsMessagingPolicies.NonServiceImpactingOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.HubTransportAgentsMessagingPolicies | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.HubTransportDsn.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.HubTransportDsn | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.HubTransportEdgeSync.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.HubTransportEdgeSync | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.HubTransportQueues.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.HubTransportQueues | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.HubTransportStoreDriver.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.HubTransportStoreDriver | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.Mailbox.AcrossCluster.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.Mailbox.AcrossCluster | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.Mailbox.ContentIndexingService.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.Mailbox.ContentIndexingService | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.Mailbox.DatabaseCopy.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.Mailbox.DatabaseCopy | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.Mailbox.DatabaseCopyPerformance.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.Mailbox.DatabaseCopyPerformance | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.Mailbox.DatabaseCopySearchable.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.Mailbox.DatabaseCopySearchable | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.Mailbox.InformationStore.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.Mailbox.InformationStore | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.Mailbox.MailboxMonitoring.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.Mailbox.MailboxMonitoring | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.Mailbox.MailboxOnDbCopy.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.Mailbox.MailboxOnDbCopy | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.Mailbox.MailSubmission.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.Mailbox.MailSubmission | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.Mailbox.PublicFolderDatabase.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.Mailbox.PublicFolderDatabase | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.Mailbox.PublicFolderDatabaseEdbLogicalDiskSpace.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.Mailbox.PublicFolderDatabaseEdbLogicalDiskSpace | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.Mailbox.PublicFolderDatabaseLogLogicalDiskSpace.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.Mailbox.PublicFolderDatabaseLogLogicalDiskSpace | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.MailboxSystemAttendant.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.MailboxTestConfig.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.MailboxTestConfig | AvailabilityHealth | True | False | Internal |
| Forensic: Overall Health | Microsoft.Exchange.2010.MonitoringCorrelationEngine.ForensicOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.MonitoringCorrelationEngine | AvailabilityHealth | True | False | Internal |
| NonServiceImpacting: Overall Health | Microsoft.Exchange.2010.MonitoringCorrelationEngine.NonServiceImpactingOverallHealthAvailabilityHealth | Microsoft.Exchange.2010.MonitoringCorrelationEngine | AvailabilityHealth | True | False | Internal |
| The Microsoft Exchange Monitoring Correlation service (MSExchangeMonitoringCorrelation) is not running. | MSExchangeMonitoringCorrelationNotRunning | Microsoft.Exchange.2010.MonitoringCorrelationEngine | AvailabilityHealth | True | True | Public |
| KHI: An IMAP4 connectivity transaction failure occurred. The mailbox database isn't unique. | _004C6F78_DCEA_4df7_82C1_F5A7B04E1FF6_ | Microsoft.Exchange.2010.ClientAccessImap4 | AvailabilityHealth | True | False | Internal |
| Forensic: The path to the location for the protocol logging for Receive connectors hasn't been set, so the existing path will be used. | _005FE946_0C54_43EA_AF36_5DD3056185E8_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: Content Aggregation Subscription Dispatch Submission Failures - increase over 3 hours - Red(>1000). | _0074C3C8_A6E4_49e6_A67F_5ED6A2BE016D_ | Microsoft.Exchange.2010.Mailbox.MailSubmission | PerformanceHealth | True | False | Internal |
| KHI: Didn't recover a database failure of a replicated database because the attempted failover failed. | _0079b07e_8b0e_43c7_85a4_ac3ddee70b90_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopy | AvailabilityHealth | True | False | Internal |
| Forensic: Exchange was unable to create the Routing Table log file or directory. | _00AA4472_73F8_41DD_8BD7_BBBA48432044_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: The Microsoft Exchange Replication service (continuous replication service) is consuming excessive memory. | _00E61208_49F1_491e_84AD_C4B00C6D7882_ | Microsoft.Exchange.2010.Mailbox.ReplayService | PerformanceHealth | True | False | Internal |
| Forensic: The Content Filter agent process isn't responding. Exchange is unable to scan the message. | _00F078F7_9F78_4EDC_A2C9_4E440C2D2203_ | Microsoft.Exchange.2010.CommonTransportAgents | AvailabilityHealth | True | False | Internal |
| Forensic: MSExchangeOABGEN: \% of Uptime in OABGEN - sustained for 72 hours - Yellow(>50). | _010A8B1D_F085_482f_8B1B_2DA8815C7CD5_ | Microsoft.Exchange.2010.MailboxSystemAttendant | PerformanceHealth | True | False | Internal |
| KHI: Outlook Web App failed to initialize. A forms registry file isn't valid. Review MSExchangeOWA event 6 for the cause. | _01940C47_6D13_46A7_99CE_F480A639DB75_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| KHI: System Attendant requires the ABV DG dll for offline address book generation but it cannot be loaded. | _019EC805_7FE6_4F51_B3AD_63873754FCF1_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: Outlook Web App failed to parse the Address Book custom properties. | _023E2388_0455_48BD_AA1F_3CB93F73FBA4_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: EdgeSync encountered a permanent error when synchronizing an address to MSERV. | _024751f9_0c8e_4787_9151_edb0a2fd7996_ | Microsoft.Exchange.2010.HubTransportEdgeSync | AvailabilityHealth | True | False | Internal |
| Forensic: Exchange couldn't get the SID for an account. The Exchange Active Directory Topology service will continue starting with limited permissions. | _025D1F2A_1DAF_46B6_9AEF_66AB5D2131AD_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| KHI: Retry Remote Delivery Queue Length - sustained for 30 minutes - Red(>1) - Hub Transport. | _026E0E71_A5B3_4781_8FBA_E29D7FC4225D_ | Microsoft.Exchange.2010.HubTransportQueues | PerformanceHealth | True | False | Internal |
| KHI: The server is having difficulty becoming an active member of its database availability group. | _028fe911_5c8f_44e9_8f4c_b6be88969139_ | Microsoft.Exchange.2010.Mailbox.ClusterService | AvailabilityHealth | True | False | Internal |
| KHI: The Microsoft Exchange RPC Client Access Service (MSExchangeRPC) isn't running. | _033e8055_4533_49c1_a07f_30ef364551c8_ | Microsoft.Exchange.2010.CommonMSExchangeRPCServiceMonitoring | AvailabilityHealth | True | False | Internal |
| KHI: Outlook Web App failed to initialize. No default theme was found. Review MSExchangeOWA event 26 for the cause. | _035DE000_CD1C_4789_9E91_229192B4C7B3_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: An exception occurred while attempting to locate a Client Access server to handle the request. | _038E817E_EDEA_4568_9B0A_BD88431AA077_ | Microsoft.Exchange.2010.ClientAccessInformationWorker | AvailabilityHealth | True | False | Internal |
| KHI: Outlook Web App failed to initialize. A required small icon configuration file doesn't exist. | _03BC2341_139C_4983_A449_1B69E0E6798F_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: No route has been created for this Public Folder Hierarchy in the routing tables. | _03E71243_0AFE_4456_AEEB_E2BEB3100821_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: The Test-ECPConnectivity (Internal) diagnostic cmdlet failed to run. | _04585F0D_1045_489F_98F3_1A05E451E230_ | Microsoft.Exchange.2010.ClientAccessTestConfig | AvailabilityHealth | False | False | Internal |
| Forensic: Outlook Web App failed to read the configuration settings from Active Directory for one of its virtual directories. | _0475B448_0B3F_449D_A504_D7FC00EA4E15_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: Couldn't find the local server. Exchange can't update the Active Directory Lightweight Directory Services (AD LDS) credentials. | _04808693_E6DF_4E7D_B5C3_57ADA1F46DB4_ | Microsoft.Exchange.2010.EdgeTransportMessageSecurity | AvailabilityHealth | True | False | Internal |
| KHI: Initialization of outbound authentication failed with the specified error for the Send connector. | _04982720_F096_4718_A7DB_8A5F49EBCBA9_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: Test-ExchangeSearch created an item in a mailbox on database and then indexed it. The subsequent search for the item failed. | _04d848a6_3c0d_49f7_9ed6_1423e7000cbc_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopySearchable | AvailabilityHealth | False | False | Internal |
| Forensic: Exchange couldn't authenticate to the Active Directory Rights Management Services (AD RMS) server. Contact the AD RMS administrator for assistance. | _04F073C8_C737_497d_B134_E61A7AC0338C_ | Microsoft.Exchange.2010.HubTransportAgentsMessagingPolicies | AvailabilityHealth | True | False | Internal |
| Forensic: Outlook Web App failed to parse the Address Book custom properties. | _05A83CAE_D1C4_400C_8F3D_E990BCCEB6B8_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: Didn't find suitable domain controllers in local site. Check that you configured enough global catalogs. Check the Application log for ADAccess events. | _05F5FD48_4B07_475A_9535_E9B47D74B449_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| Forensic: Name Service Provider Interface (NSPI) Proxy encountered an error while sending a packet. | _061BBE45_4889_45A6_A2D6_A70EB6921240_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: A mailbox on this database has been quarantined. | _062c6ad6_7f15_446d_8337_c231ee193127_ | Microsoft.Exchange.2010.Mailbox.MailboxOnDbCopy | PerformanceHealth | True | False | Internal |
| KHI: The Exchange store encountered a stack overflow. | _0660514c_bc16_4770_b43f_ae60dc5cd8d5_ | Microsoft.Exchange.2010.Mailbox.InformationStore | AvailabilityHealth | True | False | Internal |
| Forensic: The Availability service wasn't able to log on as the network service context for proxying requests. | _06973F27_B9A1_4BE7_A312_A75759447812_ | Microsoft.Exchange.2010.ClientAccessInformationWorker | AvailabilityHealth | True | False | Internal |
| KHI: Disk \% Free Space low - Red(<10\%). | _06C2CA66_F320_4576_8FD2_3DE05742A109_ | Microsoft.Exchange.2010.CommonServer | PerformanceHealth | False | False | Internal |
| KHI: Outlook Web App failed to initialize. A referenced forms registry folder doesn't exist. Review MSExchangeOWA event 2 for the cause. | _06D93572_F119_4992_A510_AD212A7536BA_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| KHI: The database copy is experiencing an unusually high log generation rate (bytes written/second) for a sustained period of at least 15 minutes. | _071afc0e_2643_4daa_af18_56d8c730d212_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption | PerformanceHealth | True | False | Internal |
| KHI: The Outlook Web App proxy or redirection failed because one of the service discovery entries isn't valid. | _0723763E_2A8B_4204_9B84_0864D8BB307A_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| KHI: MSExchange Mailbox Replication service is not responding to RPC/WCF ping. | _07842286_170a_45e9_b113_d02979ad3012_ | Microsoft.Exchange.2010.ClientAccessMailboxReplicationService | AvailabilityHealth | True | False | Internal |
| NonServiceImpacting: The internal Web Services connectivity transaction failed. The Test-WebServicesConnectivity cmdlet must be run on a Client Access server. | _07F74BE9_F036_4A24_8DA7_FB3614DBCC8A_ | Microsoft.Exchange.2010.ClientAccessWebServices | AvailabilityHealth | True | False | Internal |
| KHI: Invalid Account Credentials/Unable to Authenticate | _083326D9_B48D_448c_8B9F_685A9D026B18_ | Microsoft.Exchange.2010.ClientAccessAvailabilityService | AvailabilityHealth | True | False | Internal |
| Forensic: A configuration update occurred, but the internal cache failed to load. The existing configuration will be retained. | _087E4F30_910D_44CA_91E3_E9D766A1AC2D_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: The mounted database copy is experiencing a critically high database read latency. The rate is sustained for at least 5 minutes. | _08a962f8_b776_4b5c_afa4_4b3eb505e4b6_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyEdbLogicalDiskPerformance | PerformanceHealth | True | False | Internal |
| KHI: Indexing Stalled: Time Since Last Notification Was Indexed (>1hr behind for 30min). | _08C092E8_FD6F_48b2_BA1E_473C3B84A2F3_ | Microsoft.Exchange.2010.Mailbox.DatabaseSearchCopy | PerformanceHealth | True | False | Internal |
| KHI: LDAP Disconnects per minute - sustained for 5 minutes - Red(>10). | _08F29081_008F_4a49_A9DA_FB1BE58AC92E_ | Microsoft.Exchange.2010.CommonDomainController | PerformanceHealth | True | False | Internal |
| KHI: The agent encountered a problem when trying to load the file that lists the supported mobile operators and their capabilities. | _08FF3D95_1008_41ED_B445_EA60E1E732A0_ | Microsoft.Exchange.2010.HubTransportAgentsSMS | AvailabilityHealth | True | False | Internal |
| KHI: The Transport queue database is experiencing an unusually high log generation checkpoint depth over last 15 min - Yellow(>400). | _09A36DA2_126A_47cf_BDA7_F80022305B5E_ | Microsoft.Exchange.2010.CommonTransport | PerformanceHealth | True | False | Internal |
| KHI: Exchange couldn't read the Receive connector configuration so the service will be stopped. | _09A5E870_C3E5_4052_AB66_47C194F0C419_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: Querying taking too long: Exchange Search Slow First Batch is over 10. | _09c7e43d_4aba_41f8_9079_3882b0cf7d7f_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopySearchable | PerformanceHealth | True | False | Internal |
| KHI: The service could not be initialized because the necessary entry point could not be found. | _09DF01C7_9631_4AEA_B412_CA527D9F4ADC_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: MSExchangeFDS:OAB: Download Tasks Queued - sustained for 10 hours - Red (>10). | _0A52A377_60C4_463C_98A3_DC4B52324C41_ | Microsoft.Exchange.2010.ClientAccessFileDistributionService | PerformanceHealth | False | False | Internal |
| KHI: EdgeSync MSERV synchronization failures. | _0a64f4a7_54ff_4d95_ab0b_4fbd7db0947d_ | Microsoft.Exchange.2010.HubTransportEdgeSync | AvailabilityHealth | False | False | Internal |
| KHI: The Outlook Web App proxy failed because it couldn't find a trusted certificate for SSL encryption. | _0AB3C47D_926F_46E8_ACA2_81BEEAB00A4E_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: Transport latency impacted - SMTP Send for 99th percentile of messages not meeting SLA over last 15 minutes - Yellow(>10). | _0B028CA4_0568_45e7_8393_865A648C44E1_ | Microsoft.Exchange.2010.CommonTransport | PerformanceHealth | True | False | Internal |
| KHI: Exchange was unable to quarantine a message because the spam quarantine mailbox is invalid. Please configure the quarantine mailbox. | _0B505ABC_05BA_4185_B6C1_A9DBC1ADE905_ | Microsoft.Exchange.2010.CommonTransportAgents | AvailabilityHealth | True | False | Internal |
| KHI: A failure that may impact all copies of a database was detected; the copy terminate replication or dismount. | _0b531ab6_b00c_4930_b4b7_ae87f7478d6c_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption | AvailabilityHealth | True | False | Internal |
| Forensic: No global catalog server was found in the local site. Make sure that the local site has enough global catalog servers for Exchange. | _0BEBFB6E_D773_4FFF_BF0F_6E0A4AF4ED61_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| Forensic: A setting in the Web.Config file was not valid and has been reset to the default value. | _0D4183C4_7273_4EFC_89D0_380325C048E2_ | Microsoft.Exchange.2010.ClientAccessActiveSync | AvailabilityHealth | True | False | Internal |
| Forensic: EdgeSync Enterprise synchronization warnings. | _0d663de8_af2f_4b56_8ba9_1bc18527f6a2_ | Microsoft.Exchange.2010.HubTransportEdgeSync | AvailabilityHealth | True | False | Internal |
| Forensic: The removal of privileges from a process failed with an error code. The process and error code are specified in the event description. | _0D9C769B_2240_4A07_8170_EBA3C030B110_ | Microsoft.Exchange.2010.CommonAllServerRoles | AvailabilityHealth | True | False | Internal |
| Forensic: Exchange Control Panel failed to find a Client Access server in the same site as a user's mailbox. Review MSExchange Control Panel event 22 for the cause. | _0DE7EDC6_2064_496b_92FA_56446759D85A_ | Microsoft.Exchange.2010.ClientAccessExchangeControlPanel | AvailabilityHealth | True | False | Internal |
| Forensic: Name Server Provider Interface (NSPI) Proxy listener thread could not connect to the server on transport. The Winsock subsystem returned an error. | _0E58176D_CE7F_4BCF_B852_803AA2FC9953_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: Federated Delivery Encryption agent can't get delegation token from Windows Live. Outbound messages to Outlook Live affected until issue resolved. | _0f17e558_a24f_443d_9960_8d9e2b4b0dca_ | Microsoft.Exchange.2010.HubTransportAgentsMessagingPolicies | AvailabilityHealth | True | False | Internal |
| KHI: Couldn't initialize the Content Filter agent because a required file couldn't be found on your system. | _0F414B81_91AC_4B7C_B1E4_9E07EAC508D1_ | Microsoft.Exchange.2010.CommonTransportAgents | AvailabilityHealth | True | False | Internal |
| KHI: Required log file is missing on the active copy; continuous replication for this database is blocked. | _0F5868CB_638D_4600_BE92_1F0074A3E00F_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopy | AvailabilityHealth | True | False | Internal |
| KHI: The file system structure on the disk is corrupt and unusable. Please run the chkdsk utility. | _0F6A777B_970D_4fbe_98A8_FAFDEC0990CC_ | Microsoft.Exchange.2010.CommonServer | AvailabilityHealth | True | False | Internal |
| Forensic: LDAP Search Time - sustained for 5 minutes - Yellow(>50msec). | _0F7B2B1B_2476_41DC_89E5_00873795693A_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | PerformanceHealth | False | False | Internal |
| Forensic: The cmdlet that Exchange Control Panel requires to determine an RBAC role returned an error. MSExchange Control Panel event 31. | _0F8010BB_CD60_40e2_8DEA_EAE9839CEFB3_ | Microsoft.Exchange.2010.ClientAccessExchangeControlPanel | AvailabilityHealth | True | False | Internal |
| KHI: Unable to initialize the Exchange store due to the clocks on the client and server not being synchronized. | _0fdc40b1_6cc3_4385_8d7e_084b3c10a40c_ | Microsoft.Exchange.2010.Mailbox.InformationStore | AvailabilityHealth | True | False | Internal |
| Forensic: Mail submission is not keeping up with the work being presented by the changes to the locally mounted databases. | _10058a4d_73df_47ca_89b1_e13a45b9ea23_ | Microsoft.Exchange.2010.Mailbox.MailSubmission | PerformanceHealth | True | False | Internal |
| Forensic: The server is a member of a database availability group and other servers are currently not operational. | _102f42a5_da66_4792_b71b_8d8aeef944cb_ | Microsoft.Exchange.2010.Mailbox.AcrossCluster | AvailabilityHealth | True | False | Internal |
| Forensic: A message could not be sent to the Content Filter wrapper because of an error. The message is being rejected. | _10545155_FC9E_4430_A397_B2A3ADCED18F_ | Microsoft.Exchange.2010.CommonTransportAgents | AvailabilityHealth | True | False | Internal |
| KHI: System Attendant failed to read the membership of the universal security group. | _108E4F87_A860_4650_86DB_48E4FF303874_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | False | False | Internal |
| KHI: The database copy is low on log volume space. The volume has reached critical levels (15\% free). | _10a2b32c_b844_44f1_b750_d5150e0b249c_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyLogLogicalDiskSpace | PerformanceHealth | True | False | Internal |
| Forensic: An error occurred while sending the shutdown message to the Content Filter wrapper process. | _10EC3C58_9362_4B84_B465_B58C92437E99_ | Microsoft.Exchange.2010.CommonTransportAgents | AvailabilityHealth | True | False | Internal |
| Forensic: Aggregate Delivery Queue Length (All Queues) - sustained for 5 minutes - Red(>5000) - Edge Transport. | _1180CC57_5069_4D51_B4D0_5BE9681E8D0F_ | Microsoft.Exchange.2010.EdgeTransportQueues | PerformanceHealth | True | False | Internal |
| KHI: A transport rules agent failed to create an agent instance. | _11A19FCF_E4B0_4FEF_A733_0BBC7FE90278_ | Microsoft.Exchange.2010.CommonTransportAgents | AvailabilityHealth | True | False | Internal |
| KHI: Low or out of disk space will dismount or terminate replication on a database copy. | _11e5fc9c_366e_4b85_aa75_6cb7f73034bb_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption | AvailabilityHealth | True | False | Internal |
| KHI: A user mailbox has hit recoverable items quota limit. | _12682d82_4fe5_409e_80c5_ae940460be66_ | Microsoft.Exchange.2010.Mailbox.MailboxOnDbCopy | AvailabilityHealth | True | False | Internal |
| KHI: Aggregate Delivery Queue Length (All Queues) - sustained for 15 minutes - Red(>5000) - Hub Transport. | _12907C37_F3FC_4aa7_9FBB_CF4F31A93B97_ | Microsoft.Exchange.2010.HubTransportQueues | PerformanceHealth | True | False | Internal |
| KHI: A secure connection from a domain-secured domain failed to authenticate because validation of the TLS certificate failed. | _12E827EE_60C3_4831_A24E_36AC3E1EE288_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: An Exchange Control Panel proxy call failed to connect with the target server. | _12FE16E8_AB24_4d2f_A835_7AA3C3CBD68E_ | Microsoft.Exchange.2010.ClientAccessExchangeControlPanel | AvailabilityHealth | True | False | Internal |
| Forensic: Aggregate Delivery Queue Length (All Queues) - sustained for 5 minutes - Yellow(>3000) - Hub Transport. | _130F3202_9E5D_4DA0_B964_798BEC49D20D_ | Microsoft.Exchange.2010.HubTransportQueues | PerformanceHealth | True | False | Internal |
| KHI: Could not run the Test-EdgeSyncMserv diagnostic cmdlet. | _131D42D4_83AD_4ace_B554_5B1D9EA5BAD8_ | Microsoft.Exchange.2010.HubTransportEdgeSync | AvailabilityHealth | False | False | Internal |
| Forensic: Outlook Web App failed to parse the Address Book custom properties. Review MSExchangeOWA event 35 for the cause. A custom property file isn't valid. | _132D55F5_1C73_4DA9_9915_24CA010294DA_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: Outlook Web App couldn't parse the Address Book custom properties. | _13370019_1AF6_4A62_A8BC_EDDA80FB4209_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: The Microsoft Exchange Transport Log Search service failed to access a log file due to insufficient access permissions. | _1337B39B_CDD8_411A_844E_AE8E4667A6DE_ | Microsoft.Exchange.2010.CommonTransportLogSearch | AvailabilityHealth | True | False | Internal |
| KHI: The database copy is experiencing an unusually high log generation checkpoint depth for a sustained period of at least 15 minutes. | _133a8a56_6b9c_44e0_886c_40b6a07d74c2_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption | PerformanceHealth | True | False | Internal |
| Forensic: Couldn't connect to domain controller. It won't be used by ADAccess. Check for connectivity to the domain controller and that DNS is configured correctly. | _13AA4AF1_348A_4C4A_9413_7D2D8A03BE69_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| NonServiceImpacting: Exchange Control Panel connectivity (External) transaction failure - Test-ECPConnectivity must be run on an Exchange server. | _13AA616E_967C_4EAA_9953_FB699407119C_ | Microsoft.Exchange.2010.ClientAccessExchangeControlPanel | AvailabilityHealth | True | False | Internal |
| KHI: UMWorkerProcess Rejected Calls \% over the last 1 hour - Red (> 10). | _13d1da8f_9988_1111_8620_0e1e1aeeeee1_ | Microsoft.Exchange.2010.UnifiedMessaging.Telephony.Inbound | PerformanceHealth | True | False | Internal |
| KHI: UM Service Rejected Calls \% over the last 1 hour - Red (> 10). | _13d1da8f_9988_4c9f_8620_0e1e1aeeeee1_ | Microsoft.Exchange.2010.UnifiedMessaging.Telephony.Inbound | PerformanceHealth | True | False | Internal |
| KHI: UM Service Rejected Calls \% over the last 1 hour - Yellow (> 5). | _13d1da8f_9988_4c9f_8620_0e1e1afffff1_ | Microsoft.Exchange.2010.UnifiedMessaging.Telephony.Inbound | PerformanceHealth | True | False | Internal |
| KHI: UMWorkerProcess Rejected Calls \% over the last 1 hour - Yellow (> 5). | _13d1da8f_9989_2222_8620_0e1e1afffff1_ | Microsoft.Exchange.2010.UnifiedMessaging.Telephony.Inbound | PerformanceHealth | True | False | Internal |
| KHI: A lost flush on the active copy was detected by a passive local database copy. | _141eb379_0435_429b_8580_344d329703f5_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption | AvailabilityHealth | True | False | Internal |
| Forensic: Indicates that Exchange Control Panel detected an error during a proxy call. MSExchange Control Panel event 30. | _147632D4_DFA2_4fc5_AA44_6420190F0AB9_ | Microsoft.Exchange.2010.ClientAccessExchangeControlPanel | AvailabilityHealth | True | False | Internal |
| Forensic: A request to establish a connection between the Exchange Active Directory Provider and a domain controller failed. The domain controller isn't available. | _14DD13CA_9D9A_491E_BEDC_52BA9FF7A3A5_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| Forensic: The database copy is low on log volume space. The volume is 50\% free. | _14E06256_D37A_4a86_9F54_C2663E8037A6_ | Microsoft.Exchange.2010.Mailbox.PublicFolderDatabaseLogLogicalDiskSpace | PerformanceHealth | True | False | Internal |
| Forensic: Unable to move mailbox. | _152000A6_90AF_46BC_B1CB_259F45917020_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: The Exchange store has failed to initialize. | _1524c5ca_250f_4c06_9f19_573fab9636e6_ | Microsoft.Exchange.2010.Mailbox.InformationStore | AvailabilityHealth | True | False | Internal |
| KHI: Disk Free Megabytes low - Red(<20MB). | _1531FD0F_C0E4_4233_B580_E0DF0D4B1632_ | Microsoft.Exchange.2010.CommonServer | PerformanceHealth | False | False | Internal |
| Forensic: An Active Directory object for the local Exchange server is not found or is invalid. | _1544FB5E_BA14_4BC8_8E91_00A85299C5FD_ | Microsoft.Exchange.2010.CommonFileDistributionService | AvailabilityHealth | True | False | Internal |
| KHI: A POP3 connectivity transaction failure occurred. The Client Access server wasn't found. | _157E6526_9974_4b99_818F_0EC5EE27A55E_ | Microsoft.Exchange.2010.ClientAccessPop3 | AvailabilityHealth | True | False | Internal |
| Forensic: Unreachable Queue Length - sustained for 5 minutes - Yellow(>150) - Edge Transport. | _15A78B2E_E443_421D_B71E_86103C473D75_ | Microsoft.Exchange.2010.EdgeTransportQueues | PerformanceHealth | True | False | Internal |
| Forensic: The MessageTrackingLog is enabled, but the MessageTrackingLogPath value is null, so the MessageTrackingLog will be disabled. | _1645C5C6_6EF1_4CDB_8C56_2061A74E1C69_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: The WebReady Document Viewing worker application can't be found. | _16CE8C45_956A_42E7_A12C_5A238EB6598A_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| KHI: The Exchange store failed to start because it is out of memory. | _17bec0c6_8c9d_41c2_9aac_624ee17cea09_ | Microsoft.Exchange.2010.Mailbox.InformationStore | AvailabilityHealth | True | False | Internal |
| KHI: Startup inspection error on logs and/or database. | _17FA72A1_46F1_4ea2_B8B0_903259C40997_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopy | AvailabilityHealth | True | False | Internal |
| KHI: Outlook Web App failed to initialize. A file from a theme folder couldn't be parsed. | _1893EE98_7AB4_4067_95D1_DAC7DCE5B77D_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: Failed to read message customization configuration. | _1899C661_C3B6_4FAA_846D_9E87E1DD9552_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: The Exchange Topology discovery couldn't find the local Exchange server in Active Directory. | _18bebc51_d05c_44f6_91e6_24193d14fe48_ | Microsoft.Exchange.2010.Mailbox.MailSubmission | AvailabilityHealth | True | False | Internal |
| Forensic: Inbound direct trust authentication failed for a certificate. Make sure the EdgeSync service (MSExchangeEdgeSync) is running. | _190339AE_475D_4890_9364_88310C41BC80_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: The transport process crashed during a message processing operation. For more information, review the call stack in MSExchangeTransport event 10003. | _190727C5_50C3_4000_8C86_01ECCFEE4F3F_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: Unable to generate a unique e-mail address type. | _19118F5B_2C24_4208_90B9_684C04BB95D6_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: Anti-spam agents are enabled, but the list of internal SMTP servers is empty. | _191552DE_460D_4D2F_931B_FF9C676E432F_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: OABGen encountered an error while generating versions 2 and 3 of an offline address book (OAB). Not all versions of this OAB will be published. | _1928007D_1AAD_47E3_9C80_99DE07FFEE4B_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: The Prelicensing agent couldn't acquire a license. | _193C8A2C_5BEF_4938_9D75_EB261CF81042_ | Microsoft.Exchange.2010.HubTransportAgentsMessagingPolicies | AvailabilityHealth | True | False | Internal |
| Forensic: LDAP Fatal errors per minute - sustained for 5 minutes - Yellow(>5). | _19A49644_20B7_4ab4_A9F1_648AF10FEC9E_ | Microsoft.Exchange.2010.CommonDomainController | PerformanceHealth | True | False | Internal |
| KHI: UM Connectivity (Local Voice) transaction failure - Microsoft Exchange Unified Messaging service isn't installed or running. | _19BFC570_8EA9_42EB_B3F7_0F40F2A00119_ | Microsoft.Exchange.2010.UnifiedMessaging.Availability.Service | AvailabilityHealth | True | False | Internal |
| KHI: Monitoring failed to run the Test-MAPIConnectivity cmdlet. | _1a56b19b_fde3_4c8c_ac08_f867c9b752f1_ | Microsoft.Exchange.2010.Mailbox.MailboxMonitoring | AvailabilityHealth | True | False | Internal |
| Forensic: DSAccess failed to register an Active Directory shutdown notification with the local server. | _1A6A9C52_497F_48FE_8D54_189CC5CBE467_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| KHI: The Exchange Transport service is rejecting message submissions due to memory consumption higher than the configured threshold. | _1A6C7853_EB10_4e40_BC6B_6C0F38AFEF7C_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: MSExchangeFDS:OAB: Download Tasks Completed - sustained for 24 hours - Red (= 0). | _1A902E0E_6411_458C_A510_EC91E8236B8C_ | Microsoft.Exchange.2010.ClientAccessFileDistributionService | PerformanceHealth | False | False | Internal |
| KHI: The Microsoft Exchange Mail Submission service (MSExchangeMailSubmission) isn't running. | _1ab0e09d_e98c_4596_a5e1_d3b531ca0eda_ | Microsoft.Exchange.2010.Mailbox.ServiceMonitoring | AvailabilityHealth | True | False | Internal |
| KHI: Exchange was unable to load the STARTTLS certificate from the local store because of a mismatch with what was configured on connector FQDN. | _1AF4D65D_A7EB_456E_8C56_84F00B7A63AD_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: UM Connectivity (Local Voice) transaction failure - Call wasn't answered before time-out. | _1BBFF44E_2F95_4AE4_AE46_78CA8FD50A51_ | Microsoft.Exchange.2010.UnifiedMessaging.Availability.Service | AvailabilityHealth | True | False | Internal |
| KHI: The Transport Log Search service failed to create the message tracking log directory because of an error. | _1C1E98AC_DA9D_4D4C_AE9B_B15609382C89_ | Microsoft.Exchange.2010.CommonTransportLogSearch | AvailabilityHealth | True | False | Internal |
| Forensic: Outlook Web App encountered an error during initialization. The values defined for the Alt attribute in the small icon configuration file aren't valid. | _1C36EC66_5593_4F72_8E1B_A2DAAC43E953_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| KHI: Failed to execute the Test-PowerShellConnectivity (Internal) diagnostic cmdlet. | _1C721700_5321_4220_84E7_906185D98DFA_ | Microsoft.Exchange.2010.CommonRemotePowerShell | AvailabilityHealth | True | False | Internal |
| Forensic: Exchange Control Panel detected an SSL trust failure while making a proxy call. Review MSExchange Control Panel event 26 for the cause. | _1C7AE67A_5871_4596_8DF5_3D3B8194CB17_ | Microsoft.Exchange.2010.ClientAccessExchangeControlPanel | AvailabilityHealth | True | False | Internal |
| KHI: Outlook Web App failed to initialize. A referenced theme folder is missing. Review MSExchangeOWA event 18 for the cause. | _1CAECD0F_397A_4A49_AE54_C73E868D2012_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| KHI: The database copy is low on database volume space. The volume is 25\% free. | _1cb9f62f_9cc9_498c_9fab_8708c9f1130e_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyEdbLogicalDiskSpace | PerformanceHealth | True | False | Internal |
| Forensic: No valid TLS certificate was found. Exchange can't update the Active Directory Lightweight Directory Service (ADLDS) credentials. | _1CE71A59_FD19_4050_9D19_C6F194A51477_ | Microsoft.Exchange.2010.EdgeTransportMessageSecurity | AvailabilityHealth | True | False | Internal |
| KHI: Could not open LDAP session to Active Directory using local service credentials. Cannot access Address List configuration information. | _1CF66670_63EC_453B_B540_E8E1151DDA00_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: Protocol Analysis Background agent warning: The queue used by this agent is full. Open proxy, reverse DNS, and sender blocking are affected. | _1DB860AA_FC0E_4648_848E_0414B11C5918_ | Microsoft.Exchange.2010.CommonTransportAgents | AvailabilityHealth | True | False | Internal |
| Forensic: OALGen failed to retrieve the CMS name. | _1DBB0083_1496_4DC3_BB20_ED992B4EDB1A_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: MSExchangeAssistants Percentage Failed Event Dispatchers - OOF Assistant | _1DD6985E_FEBA_4295_AE95_0599DFEB17C7_ | Microsoft.Exchange.2010.Mailbox.Assistants | PerformanceHealth | True | False | Internal |
| KHI: The database copy is low on log volume space. The volume has reached critical levels (15\% free). | _1E253B35_A392_4ec0_8C82_A9D63524E627_ | Microsoft.Exchange.2010.Mailbox.PublicFolderDatabaseLogLogicalDiskSpace | PerformanceHealth | True | False | Internal |
| KHI: Mail Submission Service is experiencing issues: Messages Queued For Submission - sustained for 15 minutes - Red (>25). | _1e282469_a610_4503_9d78_140e528b8cec_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopySubmission | PerformanceHealth | True | False | Internal |
| Forensic: OALGen is running on the wrong CCR cluster node. Only one node in the CCR cluster can generate OAB. OAB generation will not be performed. | _1EB1B8E2_2143_4DFC_BB2B_47775DD26E04_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: Transport pipeline tracing is active, which may degrade system performance. | _1F33B344_08ED_45E0_BF33_16CBFE1342C0_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: There was an invalid configuration object found in Active Directory. The object was removed from the result set. | _1FA9004E_19FD_4382_8DCF_2684CD60017A_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| KHI: Unable to create required directory for database copy. Please check the file system permissions. | _204F2149_CB86_4a63_B530_DC13C9491CAB_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopy | AvailabilityHealth | True | False | Internal |
| KHI: A certificate used for federation is about to expire. | _20E23661_C55B_4cf1_8D5F_E85850B4D016_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: The Exchange topology couldn't be generated. | _210EBF8E_0445_4F59_A945_4D9C49D8E802_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| KHI: The database copy is low on log volume space. The volume has reached error levels (35\% free). | _2133FDD1_2E95_4474_9EB5_5429102CC7E8_ | Microsoft.Exchange.2010.Mailbox.PublicFolderDatabaseLogLogicalDiskSpace | PerformanceHealth | True | False | Internal |
| Forensic: An unexpected provider error occurred in the Autodiscover service. | _21B49C03_96A3_45DE_978D_0CE439DF9ABA_ | Microsoft.Exchange.2010.ClientAccessAutoDiscovery | AvailabilityHealth | True | False | Internal |
| KHI: An accepted domain entry was found to be corrupt in Active Directory so the configuration was rejected. | _21FEEA43_017B_41C6_8282_96E700E822E8_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: EdgeSync Enterprise synchronization failures. | _22a54b60_b124_4b38_8550_fd126c427d4b_ | Microsoft.Exchange.2010.HubTransportEdgeSync | AvailabilityHealth | True | False | Internal |
| Forensic: PoisonCount has reached or exceeded the configured poison threshold. | _22B6F00C_19A4_4777_B351_EA99C32C19B8_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: Performance counters for NSPI Proxy could not be initialized. | _22D105C7_2C52_469F_A267_1F823998B87C_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: The STARTTLS certificate for the remote server has expired. The certificate must be renewed to resume mail flow. | _22FCFD8F_383C_4D16_AFA3_47A4E5AC59AC_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: DsProxy DLL is required but cannot be loaded. | _230BFD33_D406_496A_8678_4106F61EB1BE_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: Synchronization failed to read replication data from the Active Directory. | _234C4D8D_4EA2_4767_BA1B_73E4DCF2A89F_ | Microsoft.Exchange.2010.HubTransportEdgeSync | AvailabilityHealth | True | False | Internal |
| KHI: Failed Availability Service request to Local Server FQDN. | _234F3E09_4BB7_4756_91AC_9E52FB10222B_ | Microsoft.Exchange.2010.ClientAccessAvailabilityService | AvailabilityHealth | True | False | Internal |
| KHI: The database availability group is experiencing problems that may cause it to fail due to stale security information. | _23838f70_a5d3_4f6c_80f9_277912458abf_ | Microsoft.Exchange.2010.Mailbox.ClusterQuorumGroup | AvailabilityHealth | True | False | Internal |
| Forensic: SMTP Connector rejected an incoming connection - the maximum number of connections has been reached - MSExchange Transport 1021. | _23A9002C_D601_41EB_BDB3_013E8834B039_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: The Microsoft Exchange Replication service appears to be leaking operating system handles. | _23bbf71a_ed6a_4685_9e27_35b93f8d95fb_ | Microsoft.Exchange.2010.Mailbox.ReplayService | PerformanceHealth | True | False | Internal |
| Forensic: Transport latency impacted - Delivery Queue for 99th percentile of messages not meeting SLA over last 15 minutes - Yellow(>60). | _23C68C57_D642_46fa_ACDE_D54490543AEE_ | Microsoft.Exchange.2010.CommonTransport | PerformanceHealth | True | False | Internal |
| Forensic: The OnRoutedMessage agent failed to handle a catchable exception. | _24D7E016_D8FD_499C_8B15_6D970D4A54BF_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: An IMAP4 connectivity transaction failure occurred. The session object wasn't created. | _2550B9AE_78EA_4e71_81C6_CF05F1F1BAB9_ | Microsoft.Exchange.2010.ClientAccessImap4 | AvailabilityHealth | True | False | Internal |
| Forensic: Outlook Web App failed to read or update some of its configuration settings. | _256879FC_E126_498B_9A8A_8563F2701985_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: OABGen is configured to generate version 2 or version 3 OAB files for an offline address book, but there is no public folder server available. | _259766C7_09BD_4C13_8FC1_C3B6A66054D3_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: Single page restore successfully corrected a detected error of a database copy. | _25C937CE_EF81_4397_B651_BA16BCE752EC_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopy | AvailabilityHealth | True | False | Internal |
| KHI: Outbound direct trust authentication failed for the certificate. Make sure the EdgeSync service (MSExchangeEdgeSync) is running. | _2639298E_100A_4A8D_AF1D_65F4C8827747_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: File Distribution Service: IO operation has failed. Current file synchronization operation is aborted. | _266DEDE6_FA24_4244_BE0D_FA44F873F89F_ | Microsoft.Exchange.2010.CommonFileDistributionService | AvailabilityHealth | True | False | Internal |
| KHI: IMAP4 connectivity transaction failure - The Client Access Server was not specified. | _268B2FAF_2E2C_4493_90CE_988A37AF2D09_ | Microsoft.Exchange.2010.ClientAccessImap4 | AvailabilityHealth | True | False | Internal |
| KHI: Outlook Web App failed to initialize. A file from a theme folder couldn't be parsed. Review MSExchangeOWA event 19 for the cause. | _26BF0022_B749_40A7_86B2_071CD666BD53_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: Transport availability impacted - SMTP availability of receive connector Client not meeting KHI threshold over last 15 minutes - Yellow(<99). | _27D08ADB_DAEB_4e6a_AE31_FD2A51F32EB7_ | Microsoft.Exchange.2010.CommonTransport | PerformanceHealth | True | False | Internal |
| Forensic: Couldn't find SRV records for specified domain controller. Records may not contain correct root hints. Use Dcdiag to verify DNS server config and health. | _27FA91C3_D6E1_4D89_BC4D_47B0554C08D9_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| KHI: Outlook Web App failed to initialize. A forms registry file isn't valid. Review MSExchangeOWA event 7 for the cause. | _282A89AB_774B_4916_856B_EF01FE5377FD_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: The proxy request has failed to authenticate. Make sure that Integrated Authentication is enabled on the destination Client Access server. | _283CC5D0_BAA8_4A3E_9E3C_C17564C04268_ | Microsoft.Exchange.2010.ClientAccessActiveSync | AvailabilityHealth | True | False | Internal |
| Forensic: Content indexing is not enabled on the mailbox server. | _285C1ECC_4480_4697_83B1_33BFE17284AB_ | Microsoft.Exchange.2010.ClientAccessActiveSync | AvailabilityHealth | True | False | Internal |
| Forensic: The path to the protocol logging location for Receive connectors has not been set. As a result no protocol log for Receive connectors was written. | _28AB6706_9F79_4594_84C1_7CC9E3DB4B1B_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: Exchange could not read the Receive connector configuration. The Microsoft Exchange Transport service will be stopped. | _28D71181_D64D_41FE_9EDE_1806EACB8AA9_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: The OnSubmittedMessage agent did not handle a catchable exception. | _28EF9E80_0A6A_49D7_B7DE_BEA6B0AABCBC_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: The Store Driver transport component failed to submit a store event. It wasn't able to generate NDR because of an exception. | _291C979B_85B5_4CFB_9ED5_7C614F36004E_ | Microsoft.Exchange.2010.HubTransportStoreDriver | AvailabilityHealth | True | False | Internal |
| Forensic: The configuration domain controller specified in a call to SetConfigDCName is unreachable. | _29612D1E_879E_472A_9D43_730DFBEE68A7_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| KHI: The worker process has failed to load the specified application configuration file. Please check the format of this file. | _29B65D40_E54B_4D62_AAA9_7B401C9A161C_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: Unable to find the e-mail address in the directory. | _29C4B213_E4EC_4551_9081_FDE34130258C_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: The Configuration Domain Controller specified in the registry wasn't found in the Sites container in Active Directory. | _2A5F93A0_4021_4602_8AD7_24F99CA0DBC2_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| Forensic: The SendProtocolLogPath parameter is set to null; therefore, Exchange will continue to use the old location for protocol log storage. | _2A697BE6_8692_4D64_8DE4_0F8CF9070379_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: The attempt to bind to the SourceIPAddress configured on the Send connector failed. The SourceIPAddress should be checked for correctness. | _2A85E102_7E5A_4EFF_A0B8_D1DA915E949B_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: Privileges for the Exchange ActiveSync service are incorrect. Check permissions for the Exchange ActiveSync service's ASP.NET process account. | _2ACB5006_EC5F_46BA_94B6_4B5544DDEBA0_ | Microsoft.Exchange.2010.ClientAccessActiveSync | AvailabilityHealth | True | False | Internal |
| Forensic: Exchange Control Panel failed to find a mailbox for a user. Review MSExchange Control Panel event 20 for the cause. | _2ADDC76B_DAA0_43dd_B316_B4DC59610A0C_ | Microsoft.Exchange.2010.ClientAccessExchangeControlPanel | AvailabilityHealth | True | False | Internal |
| Forensic: An incorrect record was used with the cache hash table. | _2B0AB697_4AED_40E1_898D_7617B43A0F47_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| KHI: A restartable error has terminated operation of a database copy; it is being restarted. | _2b416621_57c1_45cc_b458_5282d68b8110_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption | AvailabilityHealth | True | False | Internal |
| KHI: An invalid network adapter is specified in the Transport server DNS configuration. | _2BCB35C6_D00D_47BB_B5E0_3D9A76ABE1E0_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: I/O error that may be repaired by single page restore has impacted the database copy. | _2c0bde4c_255c_4df0_8271_61e94e22bdcc_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption | AvailabilityHealth | True | False | Internal |
| KHI: The STARTTLS certificate has expired. The certificate must be renewed to resume mail flow. | _2C13199D_3D9D_4297_B89F_728F5A8DD31E_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: A message from a domain-secured domain failed to authenticate because no Transport Layer Security (TLS) certificate was supplied. | _2C7FBB61_CA19_4B85_9225_0B572AAE377A_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: Site monitor failed to update the msExchServerSite attribute in AD. | _2C8CFB78_2CBE_46B4_AF14_2DB9655B3E17_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| Forensic: LDAP long running operations - sustained for 5 minutes - Yellow(>50). | _2CAB6F78_FD63_4D44_A1B3_8AD77F920600_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | PerformanceHealth | False | False | Internal |
| KHI: A POP3 connectivity transaction failure occurred because a security error was found. | _2D1A6864_C3CB_40a5_91A2_D27BA34739F8_ | Microsoft.Exchange.2010.ClientAccessPop3 | AvailabilityHealth | True | False | Internal |
| KHI: Failed to execute the Test-WebServices (Internal) diagnostic cmdlet. | _2D1E52F2_01C4_416D_92F2_40D4856C1523_ | Microsoft.Exchange.2010.ClientAccessTestConfig | AvailabilityHealth | True | False | Internal |
| KHI: IMAP4 connectivity transaction failure - The Client Access Server is not RPC-enabled. | _2D48D026_AEF0_44ba_9346_C3F61C675FC6_ | Microsoft.Exchange.2010.ClientAccessImap4 | AvailabilityHealth | True | False | Internal |
| KHI: There was an Exchange ActiveSync connectivity (Internal) transaction failure. The Test-ActiveSyncConnectivity cmdlet must be run on a Client Access server. | _2D5C47A8_30A4_4B40_8581_E11756A78540_ | Microsoft.Exchange.2010.ClientAccessActiveSync | AvailabilityHealth | True | False | Internal |
| Forensic: Name Service Provider Interface (NSPI) Proxy encountered an unknown exception when registering its remote procedure call (RPC) endpoints. | _2D8EF53B_A3E4_45AD_A3C3_CF4698CC3117_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: Aggregate Delivery Queue Length (All Queues) - sustained for 5 minutes - Yellow(>3000) - Edge Transport. | _2DA60C22_AFFB_4274_80A4_D45A4D757B0C_ | Microsoft.Exchange.2010.EdgeTransportQueues | PerformanceHealth | True | False | Internal |
| Forensic: The server doesn't have the Audit Security privilege on a domain controller. This privilege is used by ADAccess. Run policytest.exe. See KB 314294. | _2DA72632_94DE_4BE6_B95A_6487CB8B85D9_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| Forensic: The MSExchangeAL service logged an unexpected exception. The exception is specified in the event description. | _2DB6C285_4CEB_4DD5_997C_B8552784BC5D_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: The Exchange store database: RPC Averaged Latency - sustained for 10 minutes - Red (>200 msec). | _2E148A47_B1CA_4297_B80A_964AEEE56AF2_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyPerformance | PerformanceHealth | True | False | Internal |
| Forensic: Submission Queue Length - sustained for 5 minutes - Yellow(>150) - Hub Transport. | _2E17826C_311C_4F56_8607_81D6D29C7273_ | Microsoft.Exchange.2010.HubTransportQueues | PerformanceHealth | True | False | Internal |
| Forensic: Unsupported or unloadable policy group. | _2E577DAB_0AF3_4526_A95B_2A08B3566C75_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: The Microsoft Exchange Active Directory Topology Service (MSExchangeADTopology) isn't running. | _2e5f1d59_b7f6_487c_8d98_fadfed753ce2_ | Microsoft.Exchange.2010.CommonInternalRoleServices | AvailabilityHealth | True | False | Internal |
| KHI: There was an Outlook Web App connectivity (External) transaction failure. The Client Access server configuration check failed. | _2E923413_DE48_436B_96C6_49034F8CA1BE_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| NonServiceImpacting: MSExchangeTransport has detected a critical storage error and has taken an automated recovery action by moving the database. | _2F954DCE_FA8B_43b8_8773_9961723920C6_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: Couldn't open a Transport database because a log file is missing or corrupted. The Transport service is shutting down. | _2FA3FD21_59B4_4567_94A7_56CA1A691442_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: Delivery Failure Resolver 5.2.0 happened over last 5 minutes - Yellow(>1). | _30BF15CB_822D_43db_8F17_0AA5AD7E4EC2_ | Microsoft.Exchange.2010.CommonTransport | PerformanceHealth | True | False | Internal |
| Forensic: The Exchange Active Directory Provider failed to obtain an IP address for an Active Directory server. | _312AA9A4_7A67_47ED_B755_DF5A935D82E1_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| Forensic: An error occurred when the Domain Name System (DNS) was queried for domain entries. | _31B5A482_1054_4ECD_AAF7_49C86CCD914B_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| KHI: The Exchange store encountered an RPC error. | _31c8b203_89f3_4789_8aa9_9d0f3df2307d_ | Microsoft.Exchange.2010.Mailbox.InformationStorePerformance | AvailabilityHealth | True | False | Internal |
| Forensic: An error occurred while adding a replica of the naming context. | _321C9E9F_39D9_4539_A957_E6C66082D3D1_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: Unreachable Queue Length - sustained for 5 minutes - Yellow(>150) - Hub Transport. | _3250F0C2_C70B_40C6_9414_E47720265C88_ | Microsoft.Exchange.2010.HubTransportQueues | PerformanceHealth | True | False | Internal |
| Forensic: The OABGen couldn't generate full details because the total size of the details information is greater than 64 KB. | _32F7DA59_3D7B_4198_A57C_A42EE4F1E318_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: A recipient object in Active Directory isn't valid. Review the exception in MSExchange ADAccess 2156 for the cause. | _3355060F_7EC7_4441_B7A3_DFB44ECD710E_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| Forensic: Failed to register Service Principal Name. This may blocks specific users from accessing their mailboxes. | _338B131E_AF3E_4F16_9383_5414FEB22408_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: System Attendant failed to correctly generate Address List Service information for the task. | _33A0A258_F6E9_45A5_810B_8EDFAB40855B_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: Outlook Web App failed to initialize. A file from a theme folder couldn't be parsed. Review MSExchangeOWA event 25 for the cause. | _33BD8334_D092_4E35_91E5_8F50275F2F77_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| KHI: Remote server advertised hash authentication for Exchange, which isn't supported by this server. | _344630F0_97D3_46BB_A5AF_65B129189083_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: The Exchange store failed to start because it is out of file handles. | _34a2f1e1_d3c3_4b9d_ba22_4721c3241df2_ | Microsoft.Exchange.2010.Mailbox.InformationStore | AvailabilityHealth | True | False | Internal |
| KHI: MSExchangeAssistants Percentage Failed Event Dispatchers - All Assistants | _34E20DF4_489F_4f4f_A2B4_9BC9E520006E_ | Microsoft.Exchange.2010.Mailbox.Assistants | PerformanceHealth | True | False | Internal |
| Forensic: The specified connector experienced a non-SMTP gateway connection failure. An I/O exception occurred when writing to the drop directory. | _34E337FE_A027_4450_A5A2_4BCB002E6AF8_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: One or more networks supporting the database availability group are not operating properly on this server. | _352c3963_7abe_42c0_9cd8_e6205fd154e1_ | Microsoft.Exchange.2010.Mailbox.Network | AvailabilityHealth | True | False | Internal |
| Forensic: Unable to retrieve the local server object from Active Directory. | _3549CDBF_4418_4248_B88D_C872CF97630D_ | Microsoft.Exchange.2010.ClientAccessInformationWorker | AvailabilityHealth | True | False | Internal |
| KHI: MSExchangeAssistants Memory Process | _357A2E92_D617_42f3_8897_2A8944BF32C6_ | Microsoft.Exchange.2010.Mailbox.Assistants | PerformanceHealth | True | False | Internal |
| KHI: Error occurred while running the Test-MAPIConnectivity diagnostic cmdlet. | _35894360_F523_4623_88C0_66A69242C91A_ | Microsoft.Exchange.2010.MailboxTestConfig | AvailabilityHealth | True | False | Internal |
| KHI: A Transport database operation has encountered a fatal error. The Transport service is shutting down. | _35D2D96C_9335_4655_9062_31CE24404CD4_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: Poison Queue Length - sustained for 5 minutes - Yellow(>1) - Edge Transport. | _3637BB82_69CE_49FC_9711_0DFEF5BD3F5D_ | Microsoft.Exchange.2010.EdgeTransportQueues | PerformanceHealth | True | False | Internal |
| Forensic: Exchange ActiveSync could not access a mailbox on a Mailbox server because the Mailbox server is offline. | _36D49C26_3EEA_4053_872E_D5C76F457582_ | Microsoft.Exchange.2010.ClientAccessActiveSync | AvailabilityHealth | True | False | Internal |
| KHI: Exchange ActiveSync connectivity (Internal) transaction failure - Autodiscovery failure. | _36E2084D_0CE5_48D9_AC6B_C356AFECDDC1_ | Microsoft.Exchange.2010.ClientAccessActiveSync | AvailabilityHealth | True | False | Internal |
| Forensic: Failed to read object configuration from Active Directory. | _36EFCC81_FEDA_49DE_9DB9_674EC166B096_ | Microsoft.Exchange.2010.CommonFileDistributionService | AvailabilityHealth | True | False | Internal |
| KHI: Sender ID agent: DNS isn't configured. Messages will temporarily be handled as if DNS requests have failed. | _370708C1_0DE7_4B70_8EC7_13A709716D68_ | Microsoft.Exchange.2010.CommonTransportAgents | AvailabilityHealth | True | False | Internal |
| Forensic: No route could be found to the MDB file for the Public Folder Hierarchy in the routing tables. | _383BCDC1_09DF_48AF_AD6C_2C1A01B5370B_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: Name Server Provider Interface (NSPI) Proxy is unable to run because the listen thread on transport failed to start. | _38449724_BBDC_4830_B864_0D0CC1120FB3_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| NonServiceImpacting: Exchange failed to create the log directory. Logs won't be generated until the reason for the failure is corrected. | _3899AE0C_84F2_45E1_A8D1_E0A1A4C20353_ | Microsoft.Exchange.2010.CommonAllServerRoles | AvailabilityHealth | True | False | Internal |
| KHI: An IMAP4 connectivity transaction failure occurred. The specified user isn't unique. | _38D7F8FC_D9CC_4a45_B46C_8AA45036E04D_ | Microsoft.Exchange.2010.ClientAccessImap4 | AvailabilityHealth | True | False | Internal |
| NonServiceImpacting: At least one file couldn't be processed. These files have been tagged with .bad extensions. Look for .bad files, and verify the content is valid. | _38F21856_8ED8_4F3F_8322_D434B17DD752_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: The Microsoft Exchange POP3 service (MSExchangePOP3) isn't running. | _39062768_8a67_407a_814f_517db9636dba_ | Microsoft.Exchange.2010.ClientAccessServiceMonitoring | AvailabilityHealth | True | False | Internal |
| Forensic: Name Server Provider Interface (NSPI) Proxy called DSAccess to obtain a list of available global catalog servers. | _393C857B_1CA9_4BB6_9418_98C95B78FFA9_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: The database copy is experiencing an unusually high log generation rate (bytes written/second) for a sustained period of at least 15 minutes. | _39b3d6e6_489d_45dc_a807_670ed64b10c8_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption | PerformanceHealth | True | False | Internal |
| KHI: A restartable error has terminated operation of a local database copy; it is being restarted. | _39cd29e8_711a_4e12_9e17_3fc899a6a09a_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption | AvailabilityHealth | True | False | Internal |
| Forensic: Retry Mailbox Delivery Queue Length - sustained for 5 minutes - Yellow(>200) - Hub Transport. | _39D6C3C9_D473_43E9_8F99_A146D61893C6_ | Microsoft.Exchange.2010.HubTransportQueues | PerformanceHealth | True | False | Internal |
| KHI: A possible split brain (two active copies of a database) on a database copy has been detected; log replay for the passive database copy is terminated. | _39FBF829_B719_4acc_91E2_B897ADFCE3EB_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopy | AvailabilityHealth | True | False | Internal |
| Forensic: A user couldn't sign in to Outlook Web App because the user's Active Directory profile doesn't have a primary SMTP address. | _3A20FF1F_E761_49B9_B012_0FEFF9D4128A_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| KHI: Exchange store: Public Folder Database: Messages Queued for Submission - sustained for 15 minutes - Red (>35). | _3a90fd51_603b_40b0_8e8f_0cb49353b20e_ | Microsoft.Exchange.2010.Mailbox.PublicFolderDatabase | PerformanceHealth | True | False | Internal |
| KHI: The Microsoft Exchange Transport Log Search service was unable to access the registry. | _3A9FBFFA_221F_42cd_A0B4_8F4FFC1AC39B_ | Microsoft.Exchange.2010.CommonTransportLogSearch | AvailabilityHealth | True | False | Internal |
| NonServiceImpacting: The specified correlation time window value is less than the minimum allowed value. | _3AA11229_64DD_4f25_B90A_E3019AE59BDE_ | Microsoft.Exchange.2010.MonitoringCorrelationEngine | AvailabilityHealth | True | False | Internal |
| KHI: An error occurred while running the Test-ECPConnectivity (Internal) cmdlet. | _3B05FAB7_34D0_4497_91D5_EA2E55D4E7F9_ | Microsoft.Exchange.2010.ClientAccessTestConfig | AvailabilityHealth | True | False | Internal |
| KHI: A lost flush on the active copy was detected by a passive database copy. | _3bada911_af24_48c8_81c0_7bd31d7edd03_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption | AvailabilityHealth | True | False | Internal |
| KHI: Failed to execute the Test-OutlookWebServices diagnostic cmdlet. | _3BF27765_E45F_415c_AEE0_3C18352C8328_ | Microsoft.Exchange.2010.ClientAccessTestConfig | AvailabilityHealth | True | False | Internal |
| Forensic: Couldn't find SRV records for domain controller. An SRV record may be configured incorrectly in DNS. Use Dcdiag to check domain controller and DNS health. | _3C284AC9_F577_465E_8B5A_07136A44C63C_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| Forensic: The average MSExchangeAB NSPI directory browse request is taking longer than the allotted threshold and negatively affecting the Outlook experience. | _3c6be1b4_7b18_46b3_b938_1c664daad201_ | Microsoft.Exchange.2010.ClientAccessOutlookDirectory | PerformanceHealth | True | False | Internal |
| KHI: The average Microsoft Exchange Address Book NSPI directory request is taking longer than the allotted threshold. This is negatively affecting the Outlook experience. | _3c6be1b4_7b18_46b3_b938_1c664daad203_ | Microsoft.Exchange.2010.ClientAccessOutlookDirectory | PerformanceHealth | True | False | Internal |
| Forensic: There was an error loading configuration for the address rewriting agent. | _3C7D1A98_A2FC_4418_AFD6_C012056C891E_ | Microsoft.Exchange.2010.EdgeTransportAgentsAddressRewrite | AvailabilityHealth | True | False | Internal |
| KHI: Outlook Web App failed to initialize. A theme ID attribute wasn't found. Review MSExchangeOWA event 24 for the cause. | _3C91595B_CB27_4E09_8F3E_B8C85038527A_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: Failed to read ADLDS SSL port from registry. | _3CCC7EE7_C53D_4A1E_A2E7_63E8400F71EC_ | Microsoft.Exchange.2010.EdgeTransportMessageSecurity | AvailabilityHealth | True | False | Internal |
| Forensic: Site monitor failed to start. | _3CF7A477_4CC8_4312_AEE2_AAF4B9018AE3_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| Forensic: Transport latency impacted - SMTP Receive for 99th percentile of messages not meeting SLA over last 15 minutes - Yellow(>10). | _3D291976_D50B_4348_9325_AA40834C4190_ | Microsoft.Exchange.2010.CommonTransport | PerformanceHealth | True | False | Internal |
| KHI: Transport IsMemberOfResolver ResolvedGroups Cache nearing capacity - Yellow(>66). | _3D6552DA_2A91_4210_ACFC_0704B1BCDE3F_ | Microsoft.Exchange.2010.CommonTransport | PerformanceHealth | True | False | Internal |
| KHI: A secure connection to a domain-secured domain couldn't be established because validation of the TLS certificate failed. | _3DAE468F_AE2F_4090_A435_96B7ACB23778_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: The Microsoft Exchange Replication service couldn't enable the log copier listener. | _3dc23ab6_58f8_4c76_a32c_fac83fe72ff2_ | Microsoft.Exchange.2010.Mailbox.ReplayService | AvailabilityHealth | True | False | Internal |
| KHI: The Exchange store has terminated. | _3e078288_bb7c_495c_8808_8af40ce15274_ | Microsoft.Exchange.2010.Mailbox.InformationStorePerformance | AvailabilityHealth | True | False | Internal |
| KHI: Local database copy was unexpectedly dismounted. | _3E1D5C22_4DBE_470f_A3F7_FE3FAD610D35_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopy | AvailabilityHealth | True | False | Internal |
| KHI: The Exchange store has terminated due to an out-of-memory error. | _3e83a5a4_72ed_4a56_914c_2e823ededec8_ | Microsoft.Exchange.2010.Mailbox.InformationStore | AvailabilityHealth | True | False | Internal |
| KHI: A performance problem impacted a database copy's storage; client performance may be impacted. | _3f05ea1c_6937_472f_8d7b_06055174fdcd_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyIntegritySuppression | AvailabilityHealth | True | False | Internal |
| KHI: MSExchangeTransport found a critical storage error and has stopped because of insufficient permission to update registry. | _3F062C11_E57B_4e77_8F43_D75C24AF7E52_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: The Transport database log file path is invalid. The Microsoft Exchange Transport service is shutting down. | _3FAFE99E_9776_48AB_804B_ADC53E1245F4_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: An internal server error occurred in the Exchange Web Services component. | _3FE64847_AA4E_46C4_9AF1_4E8EED57625B_ | Microsoft.Exchange.2010.ClientAccessWebServices | AvailabilityHealth | True | False | Internal |
| Forensic: The Autodiscover service couldn't discover the Availability service that's running in a remote Active Directory forest. | _4001CC92_1A2D_4141_A804_6FFB870A8546_ | Microsoft.Exchange.2010.ClientAccessInformationWorker | AvailabilityHealth | True | False | Internal |
| KHI: Could not search under a given entry in the directory. Cannot access Address List information. | _405F269F_96F8_4836_9EE0_C92E9DE95C29_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: Connection Filter agent: DNS isn't configured. The IP Allow List and Block List providers will be skipped. | _40963FC2_6525_4F9A_AA2E_6CCB9E1402F9_ | Microsoft.Exchange.2010.CommonTransportAgents | AvailabilityHealth | True | False | Internal |
| KHI: IMAP4 connectivity transaction failure - The Client Access server was not found. | _41079587_CD8C_4816_812C_77CEBF392D65_ | Microsoft.Exchange.2010.ClientAccessImap4 | AvailabilityHealth | True | False | Internal |
| Forensic: Exchange Control Panel detected an unhandled exception during a page request. Review MSExchange Control Panel event 4 for the cause. | _41133115_B1CA_426c_802C_09EF886D399F_ | Microsoft.Exchange.2010.ClientAccessExchangeControlPanel | AvailabilityHealth | True | False | Internal |
| Forensic: An external ECP CAS server wasn't authorized to make proxy calls to the internal CAS server. Review MSExchange Control Panel event 27 for the cause. | _4138B412_B2A4_445f_80C6_13C9EBB4C0F0_ | Microsoft.Exchange.2010.ClientAccessExchangeControlPanel | AvailabilityHealth | True | False | Internal |
| NonServiceImpacting: Exchange failed to write the logs because of an error. The source component and cause of the error are specified in the event description. | _4177B349_28AB_4461_8DF8_C9FEBB1B040A_ | Microsoft.Exchange.2010.CommonAllServerRoles | AvailabilityHealth | True | False | Internal |
| KHI: The Exchange store has terminated. | _41c1bff4_4479_403d_9e38_e185e3a25d4b_ | Microsoft.Exchange.2010.Mailbox.InformationStore | AvailabilityHealth | True | False | Internal |
| Forensic: Processing the MSExchangeTransport Pickup file caused the Transport process to fail. The file will be deleted. | _41E65896_4A55_4E16_8F33_E01658AFD7F7_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: Target server error has blocked continuous replication of a database copy. | _4293FD6B_30CE_46e5_B082_0A1CF65E4D94_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopy | AvailabilityHealth | True | False | Internal |
| Forensic: Name Server Provider Interface (NSPI) Proxy encountered an unknown error while creating a new packet. The received data is being dropped. | _42B21E0B_C7DF_4633_99A9_5166420E0DAD_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: Database copy had an storage error that must be repaired as a passive copy. A successful failover was performed to enable automatic page patching. | _4343597F_1F09_46a4_8E8F_DED6DCF26A60_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption | AvailabilityHealth | True | False | Internal |
| Forensic: The DNS servers for the specified domain aren't responding. | _435824D4_7DC5_4E42_ADAD_26A7E19BFDAC_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| KHI: The MSExchangeAL service logged an out of memory exception. | _4372C938_F198_43FD_AB3D_9C1729347D30_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: Failed to run the Test-ExchangeSearch diagnostic cmdlet. | _43A05F7E_F7D5_4379_9EFC_9299DFEC4A61_ | Microsoft.Exchange.2010.MailboxTestConfig | AvailabilityHealth | False | False | Internal |
| Forensic: OALGen is running on an SCC cluster node which does not have the registry value 'OabDropFolderLocation' or it is set to a non-existing path. | _43AC1C05_6771_43A1_857D_31C39C4C0820_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: An error occurred while running the Test-ActiveSyncConnectivity (Internal) cmdlet. | _43FAC9E7_0930_492C_BAFB_4C8D41E2237E_ | Microsoft.Exchange.2010.ClientAccessTestConfig | AvailabilityHealth | True | False | Internal |
| NonServiceImpacting: Can't delete files from Pickup directory. Verify Network Service account has Delete Subfolders and Files permission for the directory. | _4477BD00_EBF0_4CBD_9696_A0831CAF877F_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: An internal error occurred. Restart the Microsoft Exchange Active Directory Topology service. | _447EADF1_6A25_4E8C_9229_3BEA94FB968A_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| NonServiceImpacting: Recipient(s) encountered with invalid master account SIDs. | _44F9662F_3ABB_4FB5_8824_2EF1A2AAE291_ | Microsoft.Exchange.2010.HubTransportAgentsMessagingPolicies | AvailabilityHealth | True | False | Internal |
| KHI: A POP3 connectivity transaction failure occurred. The Client Access server isn't enabled for RPC. | _4505324C_4DF5_4830_85B1_611107772E2A_ | Microsoft.Exchange.2010.ClientAccessPop3 | AvailabilityHealth | True | False | Internal |
| Forensic: An asynchronous LDAP call failed. In the absence of other events, you can ignore this one. | _453DE7A5_9C2B_4466_BBCB_95CA13B88993_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| KHI: Exchange Control Panel connectivity (External) transaction failures. | _45CBC307_03C8_44E3_B504_79D338F98F6D_ | Microsoft.Exchange.2010.ClientAccessExchangeControlPanel | AvailabilityHealth | True | False | Internal |
| KHI: I/O error that may be repaired by single page restore has impacted the local database copy. | _45e93ff8_96b7_49c1_ac41_24ffbeca65d4_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption | AvailabilityHealth | True | False | Internal |
| Forensic: Transport latency impacted - Messages Deferred for 99th percentile of messages not meeting SLA over last 15 minutes - Yellow(>60). | _46017BF5_3B8D_45de_B7D1_767218AEE71D_ | Microsoft.Exchange.2010.CommonTransport | PerformanceHealth | True | False | Internal |
| Forensic: Renewal of EdgeSync credential failed for an Edge Transport server. | _47460C0B_24EA_48F2_8D46_162F75CA2363_ | Microsoft.Exchange.2010.EdgeTransportMessageSecurity | AvailabilityHealth | True | False | Internal |
| Forensic: The Exchange Active Directory Provider didn't find any global catalog servers. | _47C966D2_01A3_4E1E_AD39_434C8CB97BC7_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| Forensic: Exchange was unable to load the resolver performance counters. | _47EB2468_9B3A_4C94_8FFF_4D012390C666_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: The Test-UMConnectivity (Local Voice) cmdlet failed to run. | _48003315_F73A_4F6B_8108_A1A6F7C34432_ | Microsoft.Exchange.2010.UnifiedMessaging.Availability.Service | AvailabilityHealth | True | False | Internal |
| KHI: Database copy is "failed and suspended"; it is not keeping up with the changes on the active database copy. | _483A04E9_66F9_442f_802F_A2E18D0EE227_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopy | PerformanceHealth | True | False | Internal |
| KHI: The database copy is low on database volume space. The volume has reached critical levels (8\% free). | _48865281_E001_4386_A5AA_155449BDAE73_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyEdbLogicalDiskSpace | PerformanceHealth | True | False | Internal |
| KHI: Error occurred while executing the Test-ReplicationHealth diagnostic cmdlet. | _489e8fc9_5528_4dd3_9daf_a59e790ab6c7_ | Microsoft.Exchange.2010.MailboxTestConfig | AvailabilityHealth | True | False | Internal |
| KHI: There's an error in your Outlook Web App configuration. A character in a file extension isn't valid. | _48E09538_BE62_414C_9DFA_23ABA0C456E4_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| KHI: An uncorrectable failure exists in a database copy; it may terminate replication or dismount. | _492e65ec_db1b_44b3_a353_7efa9111eb5a_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption | AvailabilityHealth | True | False | Internal |
| Forensic: The topology doesn't have a route to the Active Directory site in the routing tables. | _493A2404_E18F_47BF_9A61_3A3E7E82277C_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: Mail submission is not keeping up with the work being presented by the changes to the locally mounted databases. | _495d9853_77bd_4ccb_87f6_55944f7cf41a_ | Microsoft.Exchange.2010.Mailbox.MailSubmission | PerformanceHealth | True | False | Internal |
| Forensic: Name Service Provider Interface (NSPI) Proxy could not register an interface on any network transport. NSPI Proxy is unable to run. | _4961BFCD_339F_42C0_A6A6_AE31B78183C0_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: The Content Filter agent couldn't be initialized. | _49F9F645_068D_4E4B_A2F3_05CF2495FB9A_ | Microsoft.Exchange.2010.CommonTransportAgents | AvailabilityHealth | True | False | Internal |
| KHI: The Win32 API call returned an error. The service could not be initialized. | _4A1E55BD_96B7_4233_800F_C03039163DE3_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: The Exchange Transport service was unable to listen on the Receive connector because a 'Socket Access Denied' error was encountered. | _4B251AFE_1B77_4e7d_B16A_36CD703A60D0_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: A POP3 connectivity transaction failure occurred. There is no Exchange virtual server on the server that was specified by the user. | _4B3C9937_ACF4_401c_A6A8_BDB8D09D36CB_ | Microsoft.Exchange.2010.ClientAccessPop3 | AvailabilityHealth | True | False | Internal |
| Forensic: The Outlook Web App proxy failed because the server that was supposed to receive the proxy traffic didn't respond. | _4BE15BB4_52B5_473E_97F8_D000CE33783C_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: Largest Delivery Queue Length - sustained for 5 minutes - Red(>250) - Edge Transport. | _4BEA2550_AA4D_4140_A6A9_0BD374B65A19_ | Microsoft.Exchange.2010.EdgeTransportQueues | PerformanceHealth | True | False | Internal |
| KHI: An error occurred while running the Test-MAPIConnectivity cmdlet. | _4c17b04a_39a3_476a_b93d_929c4c99feb6_ | Microsoft.Exchange.2010.Mailbox.MailboxMonitoring | AvailabilityHealth | True | False | Internal |
| Forensic: OABGen received an error while generating the differential offline address book file. | _4CBF2D11_2C05_43D3_9922_BBEBD63F727B_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: An invalid smart hosts string was detected in the routing tables for the specified SMTP connector. The SMTP connector has been ignored. | _4CBF368D_A233_49DF_B326_3F062478D701_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: Transport latency impacted - percent messages completing categorization over last 5 min - Red(<1). | _4CF3A45F_4007_4c06_974B_F5BCF33AAFDA_ | Microsoft.Exchange.2010.CommonTransport | PerformanceHealth | True | False | Internal |
| Forensic: System Attendant failed while restarting its internal services. | _4D08FC5D_754E_401A_8A72_38FA59C1C435_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: The Exchange store has terminated due to an out-of-memory error. | _4d4972b4_1606_45c0_b01a_8a489f474864_ | Microsoft.Exchange.2010.Mailbox.InformationStorePerformance | AvailabilityHealth | True | False | Internal |
| KHI: The Exchange store encountered an RPC error. | _4e44e5df_d6c5_4e47_8dd9_7a9c4b09e9b0_ | Microsoft.Exchange.2010.Mailbox.InformationStore | AvailabilityHealth | True | False | Internal |
| KHI: The database file doesn't match the log files. The Microsoft Exchange Transport service is shutting down. | _4E77581D_0ABD_4DE4_ACB0_882E911B617A_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: Outlook Web App connectivity (Internal) transaction failures. | _4F028C01_AFBF_4093_A4DE_C1081FB53C02_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| KHI: HTTP Connectivity with Autodiscover - Address Book failure (NSPI) | _4F129C11_AFBF_4093_A4DE_C1081FB53C01_ | Microsoft.Exchange.2010.ClientAccessOutlook | AvailabilityHealth | True | False | Internal |
| KHI: HTTP Connectivity with Autodiscover - Address Book failure (ABREF) | _4F129C11_AFBF_4093_A4DE_C1081FB53C03_ | Microsoft.Exchange.2010.ClientAccessOutlook | AvailabilityHealth | True | False | Internal |
| KHI: HTTP Connectivity with Autodiscover - Autodiscover failure | _4F129C11_AFBF_4093_A4DE_C1081FB53C05_ | Microsoft.Exchange.2010.ClientAccessOutlook | AvailabilityHealth | True | False | Internal |
| KHI: HTTP Connectivity with Autodiscover - RPC Client Access failure (Connect) | _4F129C11_AFBF_4093_A4DE_C1081FB53C07_ | Microsoft.Exchange.2010.ClientAccessOutlook | AvailabilityHealth | True | False | Internal |
| KHI: HTTP Connectivity with Autodiscover - RPC Client Access failure (Logon) | _4F129C11_AFBF_4093_A4DE_C1081FB53C09_ | Microsoft.Exchange.2010.ClientAccessOutlook | AvailabilityHealth | True | False | Internal |
| KHI: HTTP Connectivity with Autodiscover - Unexpected Exception | _4F129C11_AFBF_4093_A4DE_C1081FB53C0A_ | Microsoft.Exchange.2010.ClientAccessOutlook | AvailabilityHealth | True | False | Internal |
| KHI: TCP Connectivity with Autodiscover - Address Book failure (NSPI) | _4F129C11_AFBF_4093_A4DE_C1081FB53E01_ | Microsoft.Exchange.2010.ClientAccessOutlook | AvailabilityHealth | True | False | Internal |
| KHI: TCP Connectivity with Autodiscover - Address Book failure (ABREF) | _4F129C11_AFBF_4093_A4DE_C1081FB53E03_ | Microsoft.Exchange.2010.ClientAccessOutlook | AvailabilityHealth | True | False | Internal |
| KHI: TCP Connectivity with Autodiscover - Autodiscover failure | _4F129C11_AFBF_4093_A4DE_C1081FB53E05_ | Microsoft.Exchange.2010.ClientAccessOutlook | AvailabilityHealth | True | False | Internal |
| KHI: TCP Connectivity with Autodiscover - RPC Client Access failure (Connect) | _4F129C11_AFBF_4093_A4DE_C1081FB53E07_ | Microsoft.Exchange.2010.ClientAccessOutlook | AvailabilityHealth | True | False | Internal |
| KHI: TCP Connectivity with Autodiscover - RPC Client Access failure (Logon) | _4F129C11_AFBF_4093_A4DE_C1081FB53E09_ | Microsoft.Exchange.2010.ClientAccessOutlook | AvailabilityHealth | True | False | Internal |
| KHI: TCP Connectivity with Autodiscover - Unexpected Exception | _4F129C11_AFBF_4093_A4DE_C1081FB53E0A_ | Microsoft.Exchange.2010.ClientAccessOutlook | AvailabilityHealth | True | False | Internal |
| Forensic: OABGen received an error while trying to publish one of the offline address book files to the distribution point. | _4F6A51D1_2AF5_4102_8286_BA477BE94D82_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: The Federated Delivery Encryption agent failed to find the OrganizationFederatedMailbox. Outbound messages to Outlook Live will be affected until this issue is resolved. | _50dc456d_032e_44ef_809f_2b94c690f5b2_ | Microsoft.Exchange.2010.HubTransportAgentsMessagingPolicies | AvailabilityHealth | True | False | Internal |
| KHI: Could not read a registry key because the value is not a DWORD. | _5158F906_9C5D_4384_972C_FBBA2C67494B_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: A MAPI call failed with a specific error. Review the error in the event description for more information. | _518F5D8E_7568_4308_8E17_E8CFDA9E2549_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| NonServiceImpacting: The correlation interval value specified is less than the minimum allowed value. | _519D0B8E_0D8F_479d_B83F_630A7DB86FBF_ | Microsoft.Exchange.2010.MonitoringCorrelationEngine | AvailabilityHealth | True | False | Internal |
| Forensic: Exchange ActiveSync has encountered repeated failures with a mailbox server. The process will be postponed. | _51E62EDA_7598_482F_B4A8_B696B9B097A1_ | Microsoft.Exchange.2010.ClientAccessActiveSync | AvailabilityHealth | True | False | Internal |
| KHI: The Microsoft Exchange Transport Log Search Service (MSExchangeTransportLogSearch) isn't running. | _5248a119_d598_44d3_b61f_47d98c66d81d_ | Microsoft.Exchange.2010.CommonTransportLogSearch | AvailabilityHealth | True | False | Internal |
| KHI: Outlook Web App failed to initialize. A forms registry file isn't valid. Review MSExchangeOWA event 9 for the cause. | _5325C293_7F2A_47E9_93E1_D7A9E797D8F8_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| KHI: Outlook Web App failed to initialize. A required forms registry folder doesn't exist. For more information, review MSExchangeOWA event 3. | _532FE988_BEE8_4B1B_AFDA_78E942401A50_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: Transport availability impacted - SMTP availability of receive connector Default not meeting KHI threshold over last 15 minutes - Yellow(<99). | _535FD5EE_9D0A_4d25_B785_9321A2F9DA1E_ | Microsoft.Exchange.2010.CommonTransport | PerformanceHealth | True | False | Internal |
| Forensic: There are too many mail submission threads on this server. | _53D12730_3893_4B37_A905_8997399991DD_ | Microsoft.Exchange.2010.HubTransportStoreDriver | AvailabilityHealth | True | False | Internal |
| KHI: Outlook Web App failed to retrieve the Active Directory system configuration session. | _540CC48A_9805_4BFF_B107_0EB79264F47C_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| KHI: Delivery Failure Delivery-StoreDriver 5.6.0 happened over last 5 minutes - Yellow(>5). | _548DD1CE_0062_49b7_B26F_8EC44B5632AE_ | Microsoft.Exchange.2010.CommonTransport | PerformanceHealth | True | False | Internal |
| KHI: The Microsoft Exchange Mailbox Replication Service (MSExchangeMailboxReplication) isn't running. | _54ba6691_179e_4f9f_b382_9c18fa2952f8_ | Microsoft.Exchange.2010.ClientAccessServiceMonitoring | AvailabilityHealth | True | False | Internal |
| Forensic: Active Directory Address Book Referral failed to service a client request. ABREF is returning an error. | _54EC3622_173F_48A3_8DE1_5B7DB9A5758D_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: A general Active Directory error occured. Review the error code in the event description to determine the cause of this error. | _551A231F_3DB0_4CF5_ADFE_1CE5FB0FA2CA_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| KHI: High percentage of transport submissions denied due to Throttling Service Client - sustained for 30 minutes - Red(>10) | _5555618F_B0E5_4ebb_845D_32BDE9CD45AE_ | Microsoft.Exchange.2010.CommonTransportThrottlingClient | PerformanceHealth | False | False | Internal |
| Forensic: A corrupted calendar configuration was detected for a user. Review MSExchangeOWA event 59 for the cause. Exchange is resetting the configuration. | _55A216A0_2052_45D6_AF6D_AF55A3EC8518_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: Delivery Failure Delivery-SMTP 5.6.0 happened over last 5 minutes - Yellow(>10). | _55C217C7_9917_4d40_B24E_B5773928D334_ | Microsoft.Exchange.2010.CommonTransport | PerformanceHealth | True | False | Internal |
| KHI: The WebReady Document Viewing manager wasn't able to access the temporary folder. | _5634EDAB_8830_4847_98FF_13395FBA7729_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: No source routing group was found in the routing tables for the specified connector. Therefore, the connector has been skipped. | _5665741F_6251_493B_A8F9_7177B874BA9F_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: Outlook Web App failed to read or update some of its configuration settings. | _56BD09AF_C130_4A5E_92FB_0A2E7AECB1CD_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: Unable to generate the e-mail address; the address type is not valid. | _56CA36BA_25E2_449E_9E97_7B046EDE965E_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: Exchange was unable to execute the diagnostic cmdlet to probe the IMAP4 connectivity state. | _56E55046_0CE9_11DB_9607_00E08161165F_ | Microsoft.Exchange.2010.ClientAccessTestConfig | AvailabilityHealth | True | False | Internal |
| Forensic: Exchange was unable to delete the Routing Table log file. | _57339DBE_CEEC_4F59_803A_9774679400A5_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: Unable to generate e-mail addresses because no valid e-mail address types were specified. | _5749B845_A5E5_400A_9C63_1E4530EE9811_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: Exchange was unable to load the configuration information needed for routing. The operation will be retried after the specified interval. | _577C111B_15DF_4431_B1FE_6C456B8055ED_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: Failed to execute the Test-OWAConnectivity (Internal) diagnostic cmdlet. | _5781158F_604A_4936_8004_0FEB3E99BFEF_ | Microsoft.Exchange.2010.ClientAccessTestConfig | AvailabilityHealth | True | False | Internal |
| KHI: The Autodiscover service encountered an installation error. | _57B6F34B_C97C_414D_ACC5_05B91C4A8680_ | Microsoft.Exchange.2010.ClientAccessAutoDiscovery | AvailabilityHealth | True | False | Internal |
| Forensic: Name Service Provider Interface (NSPI) Proxy ran out of memory during initialization. | _57F767A4_EF9F_4DB2_8A84_1DBCFB45EE8D_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: The Directory Service Address Book Referral failed to start. | _57FCB465_BAE0_406B_BB75_C6A73FEC302B_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: Name Service Provider Interface (NSPI) Proxy encountered an unknown error while initializing shared memory for performance counter data. | _5867894F_2593_411D_B827_C8EAF4B39390_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: DSAccess failed to provide a domain controller to use to read configuration. Proxy address calculation services will not be available. | _586EC960_8281_402F_AFF4_FA9ED992B108_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: POP3 connectivity transaction failures. | _58AEC5AA_0187_4bc1_A782_F7D1BB425922_ | Microsoft.Exchange.2010.ClientAccessPop3 | AvailabilityHealth | True | False | Internal |
| Forensic: An RPC request to the Microsoft Exchange Active Directory Topology service failed. | _59209CC1_24D3_40D2_AD45_49CE1FFCFC1A_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| Forensic: An error occured when loading the configuration for the Attachment Filtering Agent. The configuration may be corrupted or AD LDS may be unreachable. | _59499042_8E6D_4D73_8287_824B8D631E97_ | Microsoft.Exchange.2010.EdgeTransportAgentsAttachmentFilter | AvailabilityHealth | True | False | Internal |
| Forensic: OABGen couldn't create a message to post in the public folder. | _5954F704_AFAC_403D_AA28_625F0A6BACD2_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: The Microsoft Exchange Unified Messaging service wasn't able to encrypt or decrypt a voice message. | _5A27551C_1C7C_47c1_9165_020CB0CB9BE4_ | Microsoft.Exchange.2010.UnifiedMessaging.SubComponent.ProtectedVoiceMessage | AvailabilityHealth | True | False | Internal |
| KHI: Database copy had an storage error that could not be automatically repaired without trying as passive copy. Active copy failed to move. | _5A2A1413_D9B5_48dd_AB94_23D8B2BB98FD_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption | AvailabilityHealth | True | False | Internal |
| KHI: At startup, the Microsoft Exchange Replication service isn't fully initialized. The log copier listener didn't start. | _5a5f19f0_6ef2_4256_a30d_cd0d12326765_ | Microsoft.Exchange.2010.Mailbox.ReplayService | AvailabilityHealth | True | False | Internal |
| KHI: The Transport Layer Security (TLS) Certificate for the specified partner domain couldn't be validated. | _5AB186A8_551E_4068_8224_9532EE781577_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: Transport latency impacted - Submission Queue for 99th percentile of messages not meeting SLA over last 15 minutes - Yellow(>10). | _5B5F1E05_B45F_4a04_92D2_B004E8CF07B9_ | Microsoft.Exchange.2010.CommonTransport | PerformanceHealth | True | False | Internal |
| KHI: The local database copy experienced an index corruption. Please reseed the catalog by using the Update-MailboxDatabaseCopy cmdlet with the -CatalogOnly parameter. | _5B6E7C1A_AD46_4984_953B_7765E361D0EC_ | Microsoft.Exchange.2010.Mailbox.DatabaseSearchCopy | AvailabilityHealth | True | False | Internal |
| Forensic: The SMTP service completed authentication but couldn't determine the account name or security identifier (SID) for this authentication attempt. | _5B9CAC34_0BE9_48C4_A4DA_B3E0274ACB69_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: File Distribution Service: Manifest file for Offline Address Book is corrupted. Aborting current file synchronization operation. | _5C0C61F7_4636_498A_9C0B_6E0D14560E8E_ | Microsoft.Exchange.2010.CommonFileDistributionService | AvailabilityHealth | True | False | Internal |
| KHI: The Client Access server wasn't able to contact a Unified Messaging server for a Play On Phone request. | _5c13c964_19a5_4b82_8abc_381637445d44_ | Microsoft.Exchange.2010.ClientAccessUnifiedMessaging | AvailabilityHealth | True | False | Internal |
| KHI: The Exchange Transport service was unable to start listening on the Receive connector binding because the address is already in use. | _5C46F87F_17BB_4dec_8B2F_2FD232E1A5A5_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: Pickup service cannot submit the message due to database issues. | _5CFCFC4B_EED9_4188_B2D3_592EB4F1CD38_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: The Transport process couldn't save poison message information to the registry. | _5D82E27E_9EE6_4EFE_9FF1_3826E8059AFF_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: Outlook Web App failed to initialize. A forms registry file isn't valid. Review MSExchangeOWA event 5 for the cause. | _5DB2712E_607A_450E_9695_083B7109E930_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| KHI: EdgeSync EHF synchronization failures. | _5dc9bd73_e90d_4a8d_9dcc_548e9255eb96_ | Microsoft.Exchange.2010.HubTransportEdgeSync | AvailabilityHealth | False | False | Internal |
| Forensic: An agent didn't close the MIME stream after handling the event for a message. The message has been rejected. Please report this problem to the agent vendor | _5DDE84E3_9E33_44B4_986B_5C92CC4DD82D_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: OABGen failed to create the directory. One or more offline address books will not be published. | _5E133AF4_157C_467B_B761_1F45C0A7E0D4_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: EdgeSync EHF synchronization not configured. | _5e6ba7c6_9e73_43a8_adc7_6aee94ab73e5_ | Microsoft.Exchange.2010.HubTransportEdgeSync | AvailabilityHealth | False | False | Internal |
| Forensic: The directory object for this machine has the unexpected serverRole attribute value. OAB will not be generated by this server. | _5E86F2AA_70BE_43BB_AAFD_5C6DEE68D8BB_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: The Configuration Domain Controller specified in the registry is not available. | _5F0636F8_C38F_4810_AABC_FE8F5A36AC40_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| Forensic: Outlook Web App failed to parse the Address Book custom properties. Review MSExchange OWA event 34 for the cause. One of the elements isn't valid. | _5F16C48C_89DD_48FC_9652_6CA24B6591BC_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: User searches failed per minute - sustained for 5 minutes - Yellow(>10). | _5F4772DB_86B4_42a2_866D_01859FCD413E_ | Microsoft.Exchange.2010.CommonDomainController | PerformanceHealth | True | False | Internal |
| Forensic: Name Service Provider Interface (NSPI) Proxy cannot contact any global catalogs that support the NSPI Service. | _5F84A207_4D3A_4F39_96AC_1782D8EED3C7_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: A POP3 connectivity transaction failure occurred. The specified mailbox database is a recovery mailbox database and won't be monitored. | _5F965E48_7A9B_4608_9EA5_E6814DF0FA96_ | Microsoft.Exchange.2010.ClientAccessPop3 | AvailabilityHealth | True | False | Internal |
| Forensic: Failed to generate the Offline Address Book. The error is specified in the event description. | _5FCAB179_73A9_4A6E_913C_3C851D0E04FD_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: Couldn't decrypt EdgeSync credentials. Please unsubscribe and then resubscribe your Edge Transport server. | _607B391A_6E69_4EEC_B4E3_CCB9D6220545_ | Microsoft.Exchange.2010.EdgeTransportMessageSecurity | AvailabilityHealth | True | False | Internal |
| Forensic: Exchange can't obtain the fully qualified domain name (FQDN) of the specified Exchange server in the routing tables. | _60B83192_436F_47A1_858B_8A11D658A870_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: The database copy is not searchable on the local server. Another database copy may be searchable if it is mounted on a different server. | _61B1F887_50BA_4592_A904_C47C94C04612_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopySearchable | PerformanceHealth | True | False | Internal |
| KHI: Partner Voice Message Transcription failures \% over the last 1 hour - Red (> 10) | _61c1da8f_99a0_4c9f_8620_0e1e1beeeee1_ | Microsoft.Exchange.2010.UnifiedMessaging.SubComponent.PartnerTranscriptionFailures | PerformanceHealth | True | False | Internal |
| KHI: An IMAP4 connectivity transaction failure occurred. The NetworkCredential value for the given MailboxCredential is set to null. | _61C5448E_6F6A_4533_AA06_BFF13BAD198F_ | Microsoft.Exchange.2010.ClientAccessImap4 | AvailabilityHealth | True | False | Internal |
| Forensic: The connected routing group for the specified connector was not found in the routing tables. | _6286D08F_BE77_4044_97FB_71185659E4CA_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: Rule collection was not loaded because of transient errors. | _6291A285_5155_4DCF_9F99_5F79A8EDC212_ | Microsoft.Exchange.2010.HubTransportAgentsMessagingPolicies | AvailabilityHealth | True | False | Internal |
| Forensic: Delivery Failure Resolver 5.4.6 happened over last 5 minutes - Yellow(>1). | _62FA6D6E_B004_4abf_A325_4DEEDED1BC57_ | Microsoft.Exchange.2010.CommonTransport | PerformanceHealth | True | False | Internal |
| KHI: Partner Voice Message Transcription failures \% over the last 1 hour - Yellow (> 5). | _6331da8f_99a0_4c9f_8620_0e1e1bfffff1_ | Microsoft.Exchange.2010.UnifiedMessaging.SubComponent.PartnerTranscriptionFailures | PerformanceHealth | True | False | Internal |
| KHI: User searches failed per minute - sustained for 5 minutes - Red(>20). | _63353018_17FC_404c_8F20_CD3909374E74_ | Microsoft.Exchange.2010.CommonDomainController | PerformanceHealth | True | False | Internal |
| Forensic: The domain controller isn't running Windows Server 2003 Service Pack 1 or later. | _63467CB8_1022_47E2_9311_186415B50C3B_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| KHI: Apparent configuration problem on a database copy or a file/directory is missing due to a storage failure. Attempted failover failed. | _637d0c52_8127_4597_a3bd_05d85e7549fc_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption | AvailabilityHealth | True | False | Internal |
| KHI: Federation is not enabled for federated delivery. Federated delivery messages to and from Outlook Live will be affected until this issue is resolved. | _63bfcf42_0b6e_4a57_869a_c0358409fdff_ | Microsoft.Exchange.2010.HubTransportAgentsMessagingPolicies | AvailabilityHealth | True | False | Internal |
| KHI: \% of Messages Successfully Processed Over the Last Hour - Red (< 90) | _63c1da8f_99a0_4c9f_8620_0e1e1ae2e441_ | Microsoft.Exchange.2010.UnifiedMessaging.SubComponent.Pipeline | PerformanceHealth | True | False | Internal |
| KHI: Mailbox connection failures \% over the last 1 hour - Red (> 10) | _63c1da8f_99a0_4c9f_8620_0e1e1aeeeee1_ | Microsoft.Exchange.2010.UnifiedMessaging.GeneralSensor.MailboxFailures | PerformanceHealth | True | False | Internal |
| KHI: Mailbox connection failures \% over the last 1 hour - Yellow (> 5). | _63c1da8f_99a0_4c9f_8620_0e1e1afffff1_ | Microsoft.Exchange.2010.UnifiedMessaging.GeneralSensor.MailboxFailures | PerformanceHealth | True | False | Internal |
| KHI: Delay DSNs - increase over 60 minutes - Red(>20) - Edge Transport. | _63D442AF_4BAA_456C_AE12_B005598356DB_ | Microsoft.Exchange.2010.EdgeTransportDsn | PerformanceHealth | True | False | Internal |
| KHI: A POP3 connectivity transaction failure occurred. The specified user isn't unique. | _64071F87_FF3D_49ec_85FB_92B9B1D6BDE9_ | Microsoft.Exchange.2010.ClientAccessPop3 | AvailabilityHealth | True | False | Internal |
| KHI: The Test-OutlookConnectivity (Internal) cmdlet failed to run. | _646B72BA_9696_4A68_BFCA_FD3D44449DC4_ | Microsoft.Exchange.2010.ClientAccessTestConfig | AvailabilityHealth | True | False | Internal |
| KHI: The Send connector requires Transport Layer Security before the MailFrom command but the server can't establish TLS. | _647EB50A_B70B_4E60_94E1_2189B97A30DF_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: Transport latency impacted - Unreachable Queue for 99th percentile of messages not meeting SLA over last 15 minutes - Yellow(>60). | _64D9CEE7_265A_46f3_9430_C418BE2FC797_ | Microsoft.Exchange.2010.CommonTransport | PerformanceHealth | True | False | Internal |
| KHI: The Microsoft Exchange Speech Engine service (MSSpeechService) isn't running. | _650aaf2a_4d51_4a26_88a8_3c1885a3d258_ | Microsoft.Exchange.2010.UnifiedMessagingServiceMonitoring | AvailabilityHealth | True | False | Internal |
| KHI: The database copy is low on database volume space. The volume has reached error levels (16\% free). | _653D3B31_DFAE_45c8_A656_2584E4C7B93E_ | Microsoft.Exchange.2010.Mailbox.PublicFolderDatabaseEdbLogicalDiskSpace | PerformanceHealth | True | False | Internal |
| Forensic: A database copy's incremental reseed files failed to removed. | _654864B7_3DE0_4cb2_98A8_DBB5499EAA89_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopy | AvailabilityHealth | True | False | Internal |
| KHI: Could not find an accessible writable domain controller for the domain. | _656C2B58_53AC_4E35_A04E_0122DECCFAF5_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: A database is approaching its size limit. Exceeding the limit may result in the database becoming unavailable. | _656e4225_89a2_4b34_b008_621ead0bc777_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopy | AvailabilityHealth | True | False | Internal |
| KHI: The Windows Cluster service is not running. | _657bac24_5d21_4cc1_9ebb_52c724724b9d_ | Microsoft.Exchange.2010.Mailbox.ClusterService | AvailabilityHealth | True | False | Internal |
| Forensic: Unreachable Queue Length - sustained for 5 minutes - Red(>250) - Edge Transport. | _6599542B_37E8_4920_85C6_1F98769EE012_ | Microsoft.Exchange.2010.EdgeTransportQueues | PerformanceHealth | True | False | Internal |
| KHI: The Exchange information store: RPC Requests - sustained for 5 minutes - Yellow (>750). | _659a0473_5b76_44a0_acc1_4e9597db56f7_ | Microsoft.Exchange.2010.Mailbox.InformationStorePerformance | PerformanceHealth | True | False | Internal |
| KHI: \% of Messages Successfully Processed Over the Last Hour - Yellow (< 95) | _6622af44_b86e_42dd_997b_6c30913c75c8_ | Microsoft.Exchange.2010.UnifiedMessaging.SubComponent.Pipeline | PerformanceHealth | True | False | Internal |
| KHI: The Microsoft Exchange Unified Messaging service (MSExchangeUM) isn't running. | _6637f95b_8681_4ce3_976d_70a7c746e83e_ | Microsoft.Exchange.2010.UnifiedMessagingServiceMonitoring | AvailabilityHealth | True | False | Internal |
| Forensic: A notification of a configuration change has been received but the new configuration couldn't be read. The agent will continue to run with the old configuration. | _666B3A1E_B8C3_40BD_8B91_C48343F5C423_ | Microsoft.Exchange.2010.CommonTransportAgents | AvailabilityHealth | True | False | Internal |
| KHI: An error occurred while running the Test-OWAConnectivity (External) cmdlet. | _66CCCAD2_7015_4BD5_9666_87CB63DB1DB7_ | Microsoft.Exchange.2010.ClientAccessTestConfig | AvailabilityHealth | True | False | Internal |
| KHI: The database copy is not replicating log files fast enough to keep up with the changes being made to the active database copy. | _6739e186_0cdd_4f2d_a805_1dcd0b90a18d_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyReplication | PerformanceHealth | True | False | Internal |
| Forensic: Couldn't find SRV records for domain controller. The records may not be registered in DNS. Use Dcdiag to verify the DNS server configuration and health. | _67D1550C_CE16_4511_9A8A_B4287F4E5A8C_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| Forensic: The MessageTracking log file is corrupted. The corrupted file won't be included in the search results. | _67FD072F_365A_4786_BD26_47BB093F021A_ | Microsoft.Exchange.2010.CommonTransportLogSearch | AvailabilityHealth | True | False | Internal |
| KHI: Federated Delivery Decryption agent can't find federation certificate; can't decrypt token. Inbound messages from Outlook Live affected until resolved. | _680454f5_ba49_4028_9025_783d244f939c_ | Microsoft.Exchange.2010.HubTransportAgentsMessagingPolicies | AvailabilityHealth | True | False | Internal |
| Forensic: Database copy encountered a serious I/O error (active lost flush) that may have affected all copies of the database. | _683C9285_36CB_4147_92F3_3F37A8EF9211_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption | AvailabilityHealth | True | False | Internal |
| KHI: Every Active Directory server in the domain failed to respond. | _68CC2444_F30D_42DB_A1E2_1BFC407252D7_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| KHI: At startup, the Microsoft Exchange Replication service cannot enable the Active Manager RPC listener. | _695e51b2_821e_478d_8ea1_d11c0c4a27b6_ | Microsoft.Exchange.2010.Mailbox.ReplayService | AvailabilityHealth | True | False | Internal |
| KHI: The Microsoft Exchange EdgeSync Service (MSExchangeEdgeSync) isn't running. | _699393fb_2e93_4b10_b2a5_2fec8f3323aa_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: Failed to complete Autodiscover request via Local Machine FQDN. | _69ADDBDA_EF22_4223_B9A1_0315E09C49D6_ | Microsoft.Exchange.2010.ClientAccessAutoDiscovery | AvailabilityHealth | True | False | Internal |
| KHI: MSExchangeAssistants Percentage Failed Event Dispatchers - FreeBusy Assistant | _6AF04C99_F395_4d7c_961F_4CC713B90230_ | Microsoft.Exchange.2010.Mailbox.Assistants | PerformanceHealth | True | False | Internal |
| Forensic: EdgeSync MSERV synchronization warnings. | _6b542a8e_a6e2_4726_957b_072371484126_ | Microsoft.Exchange.2010.HubTransportEdgeSync | AvailabilityHealth | False | False | Internal |
| KHI: MSExchangeAssistants Percentage Failed Event Dispatchers - Resource Booking Assistant | _6B7C0422_4217_4858_BD0A_BBACA422C0ED_ | Microsoft.Exchange.2010.Mailbox.Assistants | PerformanceHealth | True | False | Internal |
| Forensic: Mail submission service did not successfully initialize. | _6bfca569_c29d_47bb_8870_b6afc1787a2d_ | Microsoft.Exchange.2010.Mailbox.MailSubmission | AvailabilityHealth | True | False | Internal |
| KHI: The Microsoft Exchange Replication service appears to be leaking operating system handles. | _6cb2df1a_c5ed_42bc_955e_4439868ea1ab_ | Microsoft.Exchange.2010.Mailbox.ReplayService | PerformanceHealth | True | False | Internal |
| KHI: MSExchangeFDS:OAB: Download Task Queued - sustained for 10 hours - Red (>1). | _6D095290_B8D4_430E_A8CC_4A5AA09EC28C_ | Microsoft.Exchange.2010.ClientAccessFileDistributionService | PerformanceHealth | False | False | Internal |
| Forensic: The site monitor failed in its attempt to check the current site name. | _6DDF3588_592B_42B1_BF10_D607EDD2B181_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| Forensic: Failed to release Operations Manager resources. | _6E9D38F1_5562_440c_8925_7E7C84F7DD98_ | Microsoft.Exchange.2010.MonitoringCorrelationEngine | AvailabilityHealth | False | False | Internal |
| KHI: There's an error in your Outlook Web App configuration. The configuration for a virtual directory couldn't be found. | _6EB7643F_6A2F_4D31_B751_8AB49D1C1733_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| KHI: An IMAP4 connectivity transaction failure occurred. The Exchange Information Store service isn't running. | _6EC31438_9763_4aa3_B622_6860400F8F32_ | Microsoft.Exchange.2010.ClientAccessImap4 | AvailabilityHealth | True | False | Internal |
| Forensic: Exchange Control Panel detected an unhandled exception during a script resource request. Review MSExchange Control Panel event 21 for the cause. | _6ECC6A57_02AA_4a44_9651_BD362A8BEFEE_ | Microsoft.Exchange.2010.ClientAccessExchangeControlPanel | AvailabilityHealth | True | False | Internal |
| KHI: Largest Delivery Queue Length - sustained for 30 minutes - Red(>250) - Hub Transport. | _705A7A7D_A2EC_4f10_8356_4759281BC316_ | Microsoft.Exchange.2010.HubTransportQueues | PerformanceHealth | True | False | Internal |
| KHI: Failed to execute the Test-MAPIConnectivity diagnostic cmdlet. | _706E1294_717C_4C3E_B012_9215E3006167_ | Microsoft.Exchange.2010.MailboxTestConfig | AvailabilityHealth | True | False | Internal |
| KHI: The Microsoft Exchange Forms-Based Authentication service (MSExchangeFBA) isn't running. | _70e71218_af11_40cc_88fd_63e95222cafa_ | Microsoft.Exchange.2010.ClientAccessServiceMonitoring | AvailabilityHealth | True | False | Internal |
| Forensic: The Exchange Active Directory Provider couldn't find an available domain controller in the domain. | _7185DCCC_3F7B_4154_9BC0_B458283035A8_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| Forensic: The maximum allowable execution time of the agent was exceeded. | _71918D83_D32A_4F69_9CAB_0C81B0B6EB49_ | Microsoft.Exchange.2010.CommonTransportAgents | AvailabilityHealth | True | False | Internal |
| KHI: The local database copy has more user load than it can support. Users need to be moved to a different database and/or server. | _71b8b5cf_56e5_4e59_895a_ead6492a11e7_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyPerformance | AvailabilityHealth | True | False | Internal |
| Forensic: Name Service Provider Interface (NSPI) Proxy encountered an error when stopping. | _71DBF17D_89CA_4BEB_8D72_C31D8DE3480A_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: A POP3 connectivity transaction failure occurred. The mailbox database isn't unique. | _722DC53B_79FB_4027_9A36_3D76E2810001_ | Microsoft.Exchange.2010.ClientAccessPop3 | AvailabilityHealth | True | False | Internal |
| Forensic: No source routing group was found in the routing tables for the specified connector with connected routing groups. | _72F40021_BD5A_4FFE_B0B3_9509D7A10586_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: The Exchange store database: RPC Averaged Latency - sustained for 5 minutes - Red (>70 msec). | _743131E4_11B7_43f5_A26B_8D4CC53BE99E_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyPerformance | PerformanceHealth | True | False | Internal |
| KHI: A reseed operation (Update-MailboxDatabaseCopy) is required due to a detected error in the database copy; the copy is failed and suspended. | _743e99e4_f494_4e2e_877c_b43d3a5784e6_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopy | AvailabilityHealth | True | False | Internal |
| KHI: The Exchange information store has used 90\% of available connections. | _74507768_d9d8_4b18_9fb7_5a5705726dd0_ | Microsoft.Exchange.2010.Mailbox.InformationStorePerformance | PerformanceHealth | True | False | Internal |
| KHI: Exchange is unable to start the Microsoft Exchange Anti-spam Update Service. | _752C72C3_7A6E_49DC_8120_F5AFF115D2BF_ | Microsoft.Exchange.2010.CommonTransportAgents | AvailabilityHealth | True | False | Internal |
| KHI: ActiveSync connectivity (Internal) transaction failures. | _75CD1165_1F7E_4B8C_A7F0_DE0EAA53137C_ | Microsoft.Exchange.2010.ClientAccessActiveSync | AvailabilityHealth | True | False | Internal |
| KHI: A failure that may impact all copies of a database was detected; the local copy terminate replication or dismount. | _7663dd96_cec2_4e20_a046_e4a37d8e0ab4_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption | AvailabilityHealth | True | False | Internal |
| KHI: The Outlook Web App proxy failed to verify access for the account used by the Exchange Client Access server. | _76768367_7459_4C25_8BA2_427D546124AA_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| KHI: Failed Availability Service requests to External Hostnames. | _769983AD_9EB2_4526_B5FD_0559A373B300_ | Microsoft.Exchange.2010.ClientAccessAvailabilityService | AvailabilityHealth | True | False | Internal |
| KHI: TCP Connectivity Against Local Server - Address Book failure (NSPI) | _76aaf2ee_f134_4f0e_925f_8f9cc0972001_ | Microsoft.Exchange.2010.ClientAccessOutlookLocalServer | AvailabilityHealth | True | False | Internal |
| KHI: TCP Connectivity Against Local Server - Address Book failure (ABREF) | _76aaf2ee_f134_4f0e_925f_8f9cc0972002_ | Microsoft.Exchange.2010.ClientAccessOutlookLocalServer | AvailabilityHealth | True | False | Internal |
| KHI: TCP Connectivity Against Local Server - RPC Client Access failure (Connect) | _76aaf2ee_f134_4f0e_925f_8f9cc0972003_ | Microsoft.Exchange.2010.ClientAccessOutlookLocalServer | AvailabilityHealth | True | False | Internal |
| KHI: TCP Connectivity Against Local Server - RPC Client Access failure (Logon) | _76aaf2ee_f134_4f0e_925f_8f9cc0972004_ | Microsoft.Exchange.2010.ClientAccessOutlookLocalServer | AvailabilityHealth | True | False | Internal |
| KHI: TCP Connectivity Against Local Server - Unexpected Exception | _76aaf2ee_f134_4f0e_925f_8f9cc0972005_ | Microsoft.Exchange.2010.ClientAccessOutlookLocalServer | AvailabilityHealth | True | False | Internal |
| Forensic: HTTP Connectivity Against Local Server - Address Book failure (NSPI) | _76aaf2ee_f134_4f0e_925f_8f9cc0972006_ | Microsoft.Exchange.2010.ClientAccessOutlookLocalServer | AvailabilityHealth | True | False | Internal |
| Forensic: HTTP Connectivity Against Local Server - Address Book failure (ABREF) | _76aaf2ee_f134_4f0e_925f_8f9cc0972007_ | Microsoft.Exchange.2010.ClientAccessOutlookLocalServer | AvailabilityHealth | True | False | Internal |
| Forensic: HTTP Connectivity Against Local Server - Autodiscover failure | _76aaf2ee_f134_4f0e_925f_8f9cc0972008_ | Microsoft.Exchange.2010.ClientAccessOutlookLocalServer | AvailabilityHealth | True | False | Internal |
| Forensic: HTTP Connectivity Against Local Server - RPC Client Access failure (Connect) | _76aaf2ee_f134_4f0e_925f_8f9cc0972009_ | Microsoft.Exchange.2010.ClientAccessOutlookLocalServer | AvailabilityHealth | True | False | Internal |
| Forensic: HTTP Connectivity Against Local Server - RPC Client Access failure (Logon) | _76aaf2ee_f134_4f0e_925f_8f9cc097200A_ | Microsoft.Exchange.2010.ClientAccessOutlookLocalServer | AvailabilityHealth | True | False | Internal |
| Forensic: HTTP Connectivity Against Local Server - Unexpected Exception | _76aaf2ee_f134_4f0e_925f_8f9cc097200B_ | Microsoft.Exchange.2010.ClientAccessOutlookLocalServer | AvailabilityHealth | True | False | Internal |
| NonServiceImpacting: There was an Outlook Web App connectivity (Internal) transaction failure. The Test-OWAConnectivity cmdlet must be run on a Client Access server. | _76D81B36_60B2_4DE5_AFAC_BCC678E8715A_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| KHI: The Microsoft Exchange Replication service was not able to enable the Active Manager RPC listener. | _774fb26e_ca79_43d3_9250_9029291b4f62_ | Microsoft.Exchange.2010.Mailbox.ReplayService | AvailabilityHealth | True | False | Internal |
| Forensic: The state of IMAP4 connectivity couldn't be detected. | _775A3378_0CE9_11DB_9607_00E08161165F_ | Microsoft.Exchange.2010.ClientAccessTestConfig | AvailabilityHealth | True | False | Internal |
| KHI: The file that lists the mobile operators and their capabilities can't be found | _775C91B2_92FC_4B25_8D92_4BB267B641A1_ | Microsoft.Exchange.2010.ClientAccessExchangeControlPanel | AvailabilityHealth | True | False | Internal |
| Forensic: The DsProxy service failed to start. | _788E0D6A_1FDB_4BF6_9841_4F6B9F3D10B9_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: Local database copy encountered a serious I/O error (active lost flush) that may have affected all copies of the database. | _78C38024_8CEE_48b6_B2C1_634B8AF08FE3_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption | AvailabilityHealth | True | False | Internal |
| KHI: An error occurred while the Test-UMConnectivity (Local Voice) cmdlet was running. | _78D885FA_C48F_4A19_A90B_E131CA2F1064_ | Microsoft.Exchange.2010.UnifiedMessaging.Availability.Service | AvailabilityHealth | True | False | Internal |
| KHI: The database copy has more user load than it can support. Users need to be moved to a different database and/or server. | _78e4a123_a361_47aa_b0f4_913db59996b0_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyPerformance | AvailabilityHealth | True | False | Internal |
| KHI: A POP3 connectivity transaction failure occurred. The NetworkCredential value for the given MailboxCredential is set to null. | _791FB07F_5509_4f37_8A0F_24E442EA61D6_ | Microsoft.Exchange.2010.ClientAccessPop3 | AvailabilityHealth | True | False | Internal |
| Forensic: Failed to copy file. | _792840D3_8691_4B1C_BCA5_1514C7574B4C_ | Microsoft.Exchange.2010.CommonFileDistributionService | AvailabilityHealth | True | False | Internal |
| Forensic: Transport latency impacted - Replay for 99th percentile of messages not meeting SLA over last 15 minutes - Yellow(>10). | _79928159_A6C8_4e47_9CB6_20484A3BBB01_ | Microsoft.Exchange.2010.CommonTransport | PerformanceHealth | True | False | Internal |
| KHI: MSExchangeAssistants Percentage Failed Event Dispatchers - Calendar Assistant | _799A169F_CC86_4a75_8A84_6C68A7DF9BCE_ | Microsoft.Exchange.2010.Mailbox.Assistants | PerformanceHealth | True | False | Internal |
| KHI: Outlook Web App failed to initialize. A forms registry file isn't valid. | _79CB1AB7_6002_4580_B0AF_66A2F4415F2A_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| KHI: The Tranport service failed to create the Pickup directory. Pickup won't function until the directory is created. | _7A7FE8D1_76A9_45B2_9A9D_773492016D2E_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: The configuration for verifying cross-forest requests wasn't found in Active Directory. | _7ABE92F0_EC3D_4122_A2FC_069CBA12988E_ | Microsoft.Exchange.2010.ClientAccessInformationWorker | AvailabilityHealth | True | False | Internal |
| Forensic: The maximum allowable number of retries to load routing configuration data has been reached. The service will be stopped. | _7B4F781F_6DA8_4075_A8BD_E9C528AEAFBD_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: System Attendant detected that the local computer is not a member of the group. | _7B9487E8_0CA9_49BD_821E_8922917C4A7B_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: One of the System Attendant's tasks is blocked. | _7BCF323A_77B0_4F01_BD12_6CF57AC904BC_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: Delivery Failure DeliveryAgent happened over last 5 minutes - Yellow(>5). | _7C01E7A3_4D1C_4a3c_BB2A_434DF2BA5C19_ | Microsoft.Exchange.2010.CommonTransport | PerformanceHealth | True | False | Internal |
| NonServiceImpacting: Couldn't categorize a non-expirable message. | _7C1D3115_4C58_4872_BF8B_23E8631E0C7A_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: Initialization of inbound authentication failed with an error for a Receive connector. | _7C5683A7_75E4_478A_9468_94B63424CD7B_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: Outlook Web App failed to initialize. A forms registry file isn't valid. | _7C898FD4_3E14_46EA_AF26_43C799A030B5_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| KHI: OABGen failed to download the files currently in the offline address book. This OAB will not be generated. | _7CB0A86C_C192_4B0F_B0EA_C9690E86F144_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: The database copy is not replicating log files fast enough for the last 30 minutes to keep up with the changes being made to the active database copy. | _7CB597F4_2A22_4a2a_9E54_1682F28C4563_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyReplication | PerformanceHealth | True | False | Internal |
| Forensic: A transient error occurred while accessing Active Directory. | _7CE0EEFE_0885_4603_8279_3221BEDC7FB9_ | Microsoft.Exchange.2010.ClientAccessActiveSync | AvailabilityHealth | True | False | Internal |
| KHI: System Attendant was unable to find the Exchange server object in the Active Directory. | _7CE8405C_4907_44DA_930E_7429C62FEE60_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: The passive database copy is experiencing a critically high log file read latency. The rate is sustained for at least 5 minutes. | _7ce9c65b_2eab_4732_bb62_2b22be8fb478_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyLogLogicalDiskPerformance | PerformanceHealth | True | False | Internal |
| Forensic: A non-SMTP gateway connection failure has occurred: The drop directory doesn't have the correct access permissions. | _7D58B9DA_5B20_4B9F_8D47_D2B75381E40A_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: Outlook Web App failed to initialize. A forms registry file isn't valid. Review MSExchangeOWA event 8 for the cause. | _7DCC252D_3D32_49AC_9E92_875433B59DE3_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: The configuration for one of the SMTP Receive connectors is invalid. The configuration change will be ignored, and the last good configuration will be used. | _7E9BC663_79A3_41D3_A4B6_073B2A59CC1E_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: Transport latency impacted - percent messages completing categorization over last 30 min - Yellow(<90). | _7F4931DB_AAE6_4916_8AEB_396B14E1D342_ | Microsoft.Exchange.2010.CommonTransport | PerformanceHealth | True | False | Internal |
| Forensic: The local topology server does not belong to any Active Directory site. | _7fe1f916_14f8_4eae_8ccd_0a9ab60a13a3_ | Microsoft.Exchange.2010.Mailbox.MailSubmission | AvailabilityHealth | True | False | Internal |
| Forensic: Active Remote Delivery Queue Length - sustained for 5 minutes - Yellow(>200) - Hub Transport. | _800D036E_8C76_4AD4_922F_8AB332452EC6_ | Microsoft.Exchange.2010.HubTransportQueues | PerformanceHealth | True | False | Internal |
| KHI: An uncorrectable failure exists in a database copy; it may terminate replication or dismount. | _801d4070_d4cd_4f92_aecc_607d7f4a3061_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption | AvailabilityHealth | True | False | Internal |
| Forensic: Exchange ActiveSync has detected that the minimum heartbeat interval is set to a value that is higher than the maximum heartbeat interval. | _80CC9FB5_2ABA_4E14_8F9E_84871928CBE8_ | Microsoft.Exchange.2010.ClientAccessActiveSync | AvailabilityHealth | True | False | Internal |
| KHI: Monitoring failed to run the Test-MRSHealth cmdlet. | _80d898e6_58fe_45e1_9c04_0ba31357b532_ | Microsoft.Exchange.2010.ClientAccessMailboxReplicationService | AvailabilityHealth | True | False | Internal |
| KHI: Availability Service Initialization Failure | _8102B570_A7BC_47a3_9F9B_F1EDCBBE00A5_ | Microsoft.Exchange.2010.ClientAccessAvailabilityService | AvailabilityHealth | True | False | Internal |
| Forensic: The Content Filter wrapper didn't respond to the last message. | _811335AC_437D_4B1F_B6B7_A30AEDC94B38_ | Microsoft.Exchange.2010.CommonTransportAgents | AvailabilityHealth | True | False | Internal |
| KHI: Transport latency impacted - 99th percentile of messages not meeting SLA over last 30 min - Red(>90). | _8127E33B_C8EC_49e7_A976_4C415463B2DB_ | Microsoft.Exchange.2010.CommonTransport | PerformanceHealth | True | False | Internal |
| Forensic: EdgeSync failed to confirm the credentials for a replication account on a subscription server. | _818E82C9_0951_4A98_8D2F_CA3A1EEDE78B_ | Microsoft.Exchange.2010.HubTransportEdgeSync | AvailabilityHealth | True | False | Internal |
| Forensic: Transport latency impacted - 99th percentile of messages not meeting SLA over last 15 min - Yellow(>90). | _81D62428_59B8_4e80_BAB3_1320293DBEB0_ | Microsoft.Exchange.2010.CommonTransport | PerformanceHealth | True | False | Internal |
| Forensic: The file version of the third-party proxy address DLL file installed on the local server is not current. | _820ED382_E094_416B_9E14_C913EB331EB7_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: A POP3 connectivity transaction failure occurred. The Microsoft Exchange Information Store service isn't running. | _82109CA0_7A80_4e18_A3BB_764447A820E7_ | Microsoft.Exchange.2010.ClientAccessPop3 | AvailabilityHealth | True | False | Internal |
| KHI: The Content Filter agent couldn't be initialized because notification of the file system change couldn't be initialized. | _821F49EA_F9CA_4D46_8E81_BA540AC6056C_ | Microsoft.Exchange.2010.CommonTransportAgents | AvailabilityHealth | True | False | Internal |
| KHI: Federated Delivery Message Decryption Impacted - More Than 90\% Messages Failed to Decrypt During Cross-premise Decryption over last 30 minutes - Red(>90). | _82E5612C_0C3B_4f56_90F1_5AA01E3E71DE_ | Microsoft.Exchange.2010.CommonTransport | PerformanceHealth | True | False | Internal |
| KHI: ExchangeSearch Zero Results Queries: greater than or equal 100 | _83AA8423_3FE6_4a85_A9CF_02EC5F4ECF54_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopySearchable | PerformanceHealth | True | False | Internal |
| KHI: An IMAP4 connectivity transaction failure occurred. The specified server version is older than the currently-supported versions. | _8441B9CF_421B_4ebd_9528_CEE1A33C7C26_ | Microsoft.Exchange.2010.ClientAccessImap4 | AvailabilityHealth | True | False | Internal |
| Forensic: Error while running Set-CasConnectivityTestCredentials | _84AE8F80_29AA_4145_94DE_A9A26F9C5756_ | Microsoft.Exchange.2010.Mailbox.MailboxMonitoring | AvailabilityHealth | True | False | Internal |
| Forensic: The target routing group wasn't found for this routing group connector in the routing tables. The connector will be skipped. | _84E82081_5A14_4B62_BCD5_58F0B837FC36_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: Number of outstanding requests - sustained for 5 minutes - Red(>100). | _84EC6494_E9E3_48b7_8313_FE9E72A44DA7_ | Microsoft.Exchange.2010.CommonDomainController | PerformanceHealth | True | False | Internal |
| KHI: The database copy is low on log volume space. The volume has reached error levels (35\% free). | _84ec6e7b_f48e_4151_af19_fbee01bf02bf_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyLogLogicalDiskSpace | PerformanceHealth | True | False | Internal |
| Forensic: Poison Queue Length - sustained for 5 minutes - Red(>5) - Edge Transport. | _84FE9480_5FE6_4261_A015_F96B4CFDA40E_ | Microsoft.Exchange.2010.EdgeTransportQueues | PerformanceHealth | True | False | Internal |
| KHI: A memory allocation failure impacted a local database copy; the copy will probably terminate replication or dismount. | _857d3ecf_3f75_4ddc_8b6f_0f9b0776436e_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption | AvailabilityHealth | True | False | Internal |
| KHI: An Exchange ActiveSync connectivity (Internal) transaction failure occurred. The test credentials can't be used to test Exchange ActiveSync. | _85904634_3C94_4E81_B48C_32EED49AA880_ | Microsoft.Exchange.2010.ClientAccessTestConfig | AvailabilityHealth | True | False | Internal |
| Forensic: DSAccess returned an error during an Active Directory notification. System Attendant will try to perform the Active Directory notification at a later time. | _859A01ED_F400_48BE_85EB_C59A51E4E48A_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: The account provided valid credentials; however, it is not authorized to use the server to submit mail to SMTP, so the authentication has failed. | _85B5FBAB_8D95_41F5_9468_3BADDEF3A004_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: The Content Filter agent couldn't be initialized. There may be corrupted files. | _85CE1B27_48C3_4ABD_B5CE_D6780221E34A_ | Microsoft.Exchange.2010.CommonTransportAgents | AvailabilityHealth | True | False | Internal |
| Forensic: The Routing tables failed to load because Active Directory is unavailable. The system will continue to use the old instance if there is one. | _860D6DF5_8D79_445F_AE4F_44F5B5666F5F_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: File Distribution Service: Failed to read from metabase because specified metabase object could not be found. OAB synchronization suspended. | _8613C2DF_0D14_4357_814C_90B6BD1894D9_ | Microsoft.Exchange.2010.CommonFileDistributionService | AvailabilityHealth | True | False | Internal |
| Forensic: An EdgeSync synchronization process couldn't start because the configuration data didn't pass validation. | _863F7827_978A_4CB9_978C_A6FF7E8B53EB_ | Microsoft.Exchange.2010.HubTransportEdgeSync | AvailabilityHealth | True | False | Internal |
| KHI: The Microsoft Exchange Assistants Service startup is being delayed due to continuous crashes | _86C3967B_1BB5_4d03_9E8E_8CC899E858C9_ | Microsoft.Exchange.2010.Mailbox.Assistants | AvailabilityHealth | True | False | Internal |
| KHI: A Unified Messaging server couldn't be located to handle the call for a particular mailbox. | _86F63956_43FF_49ea_8373_0883D4874172_ | Microsoft.Exchange.2010.UnifiedMessaging.Telephony.Inbound | AvailabilityHealth | True | False | Internal |
| Forensic: Unable to retreive the server security descriptor. | _8701759B_F388_4E58_8476_0329812DE7DB_ | Microsoft.Exchange.2010.ClientAccessInformationWorker | AvailabilityHealth | True | False | Internal |
| KHI: Failed to execute the Test-OWAConnectivity (External) diagnostic cmdlet. | _8776E3FC_7BCB_46A7_92E3_667749050936_ | Microsoft.Exchange.2010.ClientAccessTestConfig | AvailabilityHealth | True | False | Internal |
| KHI: Corruption that can be corrected via a reseed exists in a database copy; it may terminate replication or dismount. | _8781d6b6_2efa_488e_80ac_8e2e794e0236_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption | AvailabilityHealth | True | False | Internal |
| Forensic: File Distribution Service: Active Directory contains invalid configuration object. | _87FB9372_E942_465E_9853_2D7888A06224_ | Microsoft.Exchange.2010.CommonFileDistributionService | AvailabilityHealth | True | False | Internal |
| Forensic: An exception occured while loading the required EdgeSync credentials. Run the Test-EdgeSynchronization cmdlet on the Hub Transport server. | _88D08786_4C79_4A61_A8ED_16AE23655E5F_ | Microsoft.Exchange.2010.HubTransportEdgeSync | AvailabilityHealth | True | False | Internal |
| KHI: An IMAP4 connectivity transaction failure occurred. The Mailbox database wasn't found. | _88E477DB_10E0_433a_9D5C_0157151B99E3_ | Microsoft.Exchange.2010.ClientAccessImap4 | AvailabilityHealth | True | False | Internal |
| KHI: Microsoft Exchange System Attendant does not have sufficient rights to read Exchange configuration objects in Active Directory. | _894EB526_B34B_4BEB_B76D_381AABC89198_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: Transport latency impacted - SMTP Send Connect for 99th percentile of messages not meeting SLA over last 15 minutes - Yellow(>10). | _89B44157_6A3B_48b2_BB1A_840D3F436F05_ | Microsoft.Exchange.2010.CommonTransport | PerformanceHealth | True | False | Internal |
| Forensic: Largest Delivery Queue Length - sustained for 5 minutes - Yellow(>200) - Hub Transport. | _8A3B81E1_F950_4906_8D29_916C819BF215_ | Microsoft.Exchange.2010.HubTransportQueues | PerformanceHealth | True | False | Internal |
| Forensic: Exchange was unable to successfully use the Microsoft Update agent. | _8AF89FE9_EA0C_4CE6_85A5_54A9BABA9606_ | Microsoft.Exchange.2010.CommonTransportAgents | AvailabilityHealth | True | False | Internal |
| KHI: The Microsoft Exchange Transport Log Search Service failed to start due to a LogSessionManager startup error. | _8B3EBD35_BF76_4802_8C43_60352427688A_ | Microsoft.Exchange.2010.CommonTransportLogSearch | AvailabilityHealth | True | False | Internal |
| Forensic: Proxy encountered an error while receiving a packet. The target domain controller, the network, or a client might be down. | _8B87857E_7132_47AE_99B6_A70270773064_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: No source Hub Transport servers or home MTA server set for the specified connector could be found in the routing tables. | _8C0F94D7_9E08_4E8E_AE14_CD7986393C03_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: There is no default authoritative domain or the domain name is empty. | _8C636AD1_7292_415D_B985_0EE9DA051D7D_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: The Exchange Active Directory Provider didn't find any domain controllers. | _8C8C8968_3E1B_4444_9416_C58497ED0255_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| KHI: The database copy isn't replaying log files fast enough for the last two hours to keep up or catch up with the changes being made to the active database copy. | _8CB6F826_0099_486d_9D0B_CF4EEF4BEB67_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyReplay | PerformanceHealth | True | False | Internal |
| KHI: The Exchange information store: RPC Requests - sustained for 5 minutes - Red (>1000). | _8cc22dd1_2b36_4568_acdc_cc0121aa3af1_ | Microsoft.Exchange.2010.Mailbox.InformationStorePerformance | PerformanceHealth | True | False | Internal |
| Forensic: Unable to generate an e-mail address. The address type was returned by address generation DLL. | _8CED50B4_B8FB_434D_B190_2810F02E6238_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: The directory server specified in the registry wasn't found in the Sites container in Active Directory, so the AD Provider won't use this server. | _8D3280FE_5F90_4CAC_96A3_E4E92DB42B69_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| Forensic: The database engine has consumed 99\% of the "b-trees" resource (87048 used out of a maximum of 87696) for the database. | _8D36B31E_A62C_4d06_BE85_656CC2B4A69B_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption | AvailabilityHealth | True | False | Internal |
| Forensic: Operation Manager is unable to stop the Microsoft Exchange Anti-spam Update Service. | _8D3C353A_4246_47D8_B691_D8703E02DAEB_ | Microsoft.Exchange.2010.CommonTransportAgents | AvailabilityHealth | True | False | Internal |
| Forensic: A Non-SMTP Gateway Connection failure has occurred on the specified connector: the drop directory does not exist. | _8D4EE88A_1984_4F99_8A64_1C4ACC66F401_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: A LDAP search call failed. Ignore this error if there are no related events. Review the Application log and check for network connectivity issues. | _8D8836D8_A875_4873_8DE3_B76B234A6F14_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| KHI: Rule collection was not loaded because of configuration errors. Messages will be deferred. | _8DB2CABB_EC85_4D83_BFC5_2A67DC727773_ | Microsoft.Exchange.2010.HubTransportAgentsMessagingPolicies | AvailabilityHealth | True | False | Internal |
| KHI: Could not establish a secure LDAP connection to the server. The domain controller is not running Windows 2000 SP3 or later. | _8E06CE1D_CC75_4E36_85D3_B08D0252CB51_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: The transport process couldn't remove poison message information from the registry. Access to the registry failed with the specified error. | _8E22587D_0A9D_43F8_A502_B99170785DE4_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: File Distribution Service: Failed to read property from metabase object. OAB synchronization suspended. | _8E614AB3_C7BD_4BBF_A258_BEA769975ED6_ | Microsoft.Exchange.2010.CommonFileDistributionService | AvailabilityHealth | True | False | Internal |
| Forensic: File Distribution Service: Active Directory contains invalid value for PollInterval attribute of OAB Virtual Directory object. | _8E89F544_FA79_4777_BBA1_A1F877F9779A_ | Microsoft.Exchange.2010.CommonFileDistributionService | AvailabilityHealth | True | False | Internal |
| Forensic: The topology doesn't contain a route to the server in the Active Directory site in the routing tables. | _8F3A99D9_03BD_4513_BC78_1C1EA990D2BD_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: A database experienced a hard I/O error in NTFS. NTFS failed to allow the creation of a file as part of a failover. | _8f635dac_9cf6_423d_8455_16c8ca9ee974_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption | AvailabilityHealth | True | False | Internal |
| Forensic: The Exchange Active Directory Provider couldn't read an attribute from the root DSE of the Active Directory server. | _9019BCD5_F717_4D62_944F_447F314E005F_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| Forensic: Outlook Web App couldn't parse the Address Book custom properties. Review MSExchangeOWA event 33 for the cause. | _90426B07_E58E_465C_8EF3_19397C90EAAD_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: The Sender isn't valid. The StoreDriver event will be ignored. | _90943DBD_2206_4CF2_BF23_69ABE5EF38B3_ | Microsoft.Exchange.2010.HubTransportStoreDriver | AvailabilityHealth | True | False | Internal |
| Forensic: Exchange was unable to register the service principal name. | _910D50D7_2EE9_4CE0_A573_D3008423AE85_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: The Microsoft Exchange Replication service is not running. | _91621ee3_d3ec_4c9b_984a_8edeef4edc24_ | Microsoft.Exchange.2010.Mailbox.ReplayService | AvailabilityHealth | True | False | Internal |
| Forensic: OABGen couldn't generate full details for some entries in the offline address book. | _917AAB0B_70E3_4FD2_A307_36B85F71D1BA_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: The Send connector has failed to authenticate with the remote server. | _91A904EA_8961_42FB_A089_5683F49E735C_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: Unable to create directory. | _91A99B27_50E2_4309_9AD9_0FA9344F8715_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: Delivery Failure Delivery-StoreDriver 5.2.0 happened over last 5 minutes - Yellow(>2). | _91CBF52A_13DD_4337_88EB_F629C150100D_ | Microsoft.Exchange.2010.CommonTransport | PerformanceHealth | True | False | Internal |
| KHI: An error occurred during an Mserv lookup. | _9248222D_7A73_469d_98D3_F6A5EB1EAB25_ | Microsoft.Exchange.2010.UnifiedMessaging.Telephony.Inbound | AvailabilityHealth | True | False | Internal |
| KHI: The average MSExchange RpcClientAccess request is taking longer than the allotted threshold. This is negatively affecting the Outlook experience. | _925d1fb0_a86e_4522_b9ba_dc2b165734eb_ | Microsoft.Exchange.2010.ClientAccessOutlookInstancePerformance | PerformanceHealth | True | False | Internal |
| KHI: MSExchange RpcClientAccess Per Server RPC Average Latency (Backend) - sustained for 15 minutes - Red (>225) | _925d1fb0_a86e_4522_b9ba_dc2b165734ef_ | Microsoft.Exchange.2010.ClientAccessOutlookInstancePerformance | PerformanceHealth | True | False | Internal |
| KHI: MSExchange RpcClientAccess Per Server RPC Failed Backend Connections - sustained for 5 minutes - Red (>2) | _925d1fb0_a86e_4522_b9ba_dc2b165734f3_ | Microsoft.Exchange.2010.ClientAccessOutlookInstancePerformance | PerformanceHealth | True | False | Internal |
| KHI: MSExchange RpcClientAccess Per Server RPC Active Backend Connections (\% of Limit) - sustained for 15 minutes - Red (>98) | _925d1fb0_a86e_4522_b9ba_dc2b165734f7_ | Microsoft.Exchange.2010.ClientAccessOutlookInstancePerformance | PerformanceHealth | True | False | Internal |
| KHI: Outlook Web App failed to initialize. A referenced forms registry folder doesn't exist. Review MSExchangeOWA event 1 for the cause. | _92D27124_8067_47D1_BC12_E2C6515A3BD1_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| KHI: The Microsoft Exchange Information Store service (MSExchangeIS) is not running. | _93558cf0_e063_45b1_b57a_0d4b53e0d615_ | Microsoft.Exchange.2010.Mailbox.InformationStore | AvailabilityHealth | True | False | Internal |
| Forensic: A DNS failure occurred at the Send connector. See the associated diagnostic informaton. | _93902FED_EBE0_4A00_9194_300898AC7BE9_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: The database availability group is experiencing problems that may cause it to eventually fail due to stale security information. | _945b8fdf_a054_4de6_b26f_91763081252a_ | Microsoft.Exchange.2010.Mailbox.ClusterFsw | AvailabilityHealth | True | False | Internal |
| Forensic: There was an error loading the journaling agent configuration. | _94886AEA_F111_4B28_900B_65869E4AD0A4_ | Microsoft.Exchange.2010.HubTransportAgentsMessagingPolicies | AvailabilityHealth | True | False | Internal |
| KHI: Exchange Control Panel connectivity (External) transaction warnings. | _9515A8CC_ECBC_495B_BE8C_2558D99F82E9_ | Microsoft.Exchange.2010.ClientAccessExchangeControlPanel | AvailabilityHealth | True | False | Internal |
| KHI: The service failed to start because of a problem with one of its dependencies. | _951E0097_359B_4098_B401_ED08E73F0D2F_ | Microsoft.Exchange.2010.MonitoringCorrelationEngine | AvailabilityHealth | True | False | Internal |
| KHI: The Microsoft Exchange Transport Log Search Service failed to start due to a message tracking log error. | _958FB7AC_9DF6_45E4_8991_7EDD6D78FB64_ | Microsoft.Exchange.2010.CommonTransportLogSearch | AvailabilityHealth | True | False | Internal |
| KHI: An error occurred while running the Test-WebServicesConnectivity cmdlet in internal mode. | _959F10A7_6010_40BD_A18A_58FF28AF1C98_ | Microsoft.Exchange.2010.ClientAccessTestConfig | AvailabilityHealth | True | False | Internal |
| KHI: A non-transient error blocked replication startup of a database copy. | _95A7E512_E281_4282_A3F8_D03250D0AFEE_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopy | AvailabilityHealth | True | False | Internal |
| KHI: WebReady Document Viewing isn't registered. To correct this problem, reinstall Outlook Web App. | _95AF3CD8_CC5E_472F_8E7F_40FC5F3007FA_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| KHI: Outlook Web App connectivity (Internal) transaction warnings. | _95D89044_653C_43F7_997E_420A313224B4_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: An unexpected error occurred while retrieving data from the Autodiscover service. | _96BF6DEF_0EA2_4E8A_897E_4CDEB9FBABDF_ | Microsoft.Exchange.2010.ClientAccessAutoDiscovery | AvailabilityHealth | True | False | Internal |
| KHI: There was an Outlook Web App connectivity (Internal) transaction failure. The Client Access server configuration check failed. | _9705283E_8972_4898_BB23_27CD76750386_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: LDAP Search Timeouts - sustained for 5 minutes - Yellow(>10). | _9770509D_8C25_4D32_AC28_EA45C505C2C1_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | PerformanceHealth | False | False | Internal |
| KHI: Outlook Web App failed to initialize. A file from a theme folder couldn't be parsed. Review MSExchangeOWA event 22 for the cause. | _978B00BA_E283_4F88_AD5E_F59D7EEE3342_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: Unable to load the performance counters for the Microsoft Exchange Mail Submission Service. The respective Performance object is named MSExchangeMail Submission. | _97ca310c_fe3b_44ab_ac3b_06642541ea03_ | Microsoft.Exchange.2010.Mailbox.MailSubmission | AvailabilityHealth | True | False | Internal |
| KHI: The database copy is low on database volume space. The volume has reached critical levels (8\% free). | _98042037_5FA8_42eb_B181_382ECC6665F1_ | Microsoft.Exchange.2010.Mailbox.PublicFolderDatabaseEdbLogicalDiskSpace | PerformanceHealth | True | False | Internal |
| Forensic: Referral Interface cannot contact any global catalog server that supports the NSPI Service. | _98333493_9606_4306_B5FE_B068420C907D_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: An unexpected System Attendant error occurred. Review the event description for the error that was logged. | _9839A528_6F4E_4A4D_A2ED_29ACD5A089C3_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: A memory allocation failure impacted a database copy; the copy will probably terminate replication or dismount. | _99781086_94d4_4aad_8c1b_9c6bc57caae1_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption | AvailabilityHealth | True | False | Internal |
| Forensic: The Exchange store database: RPC Average Latency - sustained for 5 minutes - Yellow (>50 msec). | _9AB6DDEC_E366_419b_82C7_04C1EB53B5BD_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyPerformance | PerformanceHealth | True | False | Internal |
| KHI: Outlook Web App failed to initialize. A forms registry file isn't valid. | _9ACE2DDD_B5D7_46C0_8536_6015B9F51EDE_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: Databases were moved while the Test-MAPIConnectivity cmdlet was running on this server. | _9b01490a_8fc6_474d_a990_67101678a288_ | Microsoft.Exchange.2010.Mailbox.MailboxMonitoring | AvailabilityHealth | True | False | Internal |
| Forensic: Exchange Direct Push has detected that the maximum heartbeat interval is set to a value that is greater than the maximum allowable value. | _9B2C8BA1_4495_49C0_AC0B_7D603DD8AA1C_ | Microsoft.Exchange.2010.ClientAccessActiveSync | AvailabilityHealth | True | False | Internal |
| KHI: A performance problem impacted a local database copy's storage; client performance may be impacted. | _9c2ec8a8_4c05_4977_be28_6a4a89ccd23c_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyIntegritySuppression | AvailabilityHealth | True | False | Internal |
| KHI: The Microsoft Exchange System Attendant service (MSExchangeSA) isn't running. | _9c4a9e22_04d9_4ca2_8cc5_dcfbb9170b05_ | Microsoft.Exchange.2010.Mailbox.ServiceMonitoring | AvailabilityHealth | True | False | Internal |
| Forensic: The database copy is low on database volume space. The volume is 25\% free. | _9C5C1CA0_26DE_44e6_97B7_CFEA8728C6C3_ | Microsoft.Exchange.2010.Mailbox.PublicFolderDatabaseEdbLogicalDiskSpace | PerformanceHealth | True | False | Internal |
| KHI: LDAP Search Timeouts - sustained for 5 minutes - Red(>20). | _9C8AC713_8FEE_4143_A807_5D6634E48CFC_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | PerformanceHealth | False | False | Internal |
| KHI: An IMAP4 connectivity transaction failure occurred. No Exchange virtual server was found on the node specified by the user. | _9CC640FE_0077_445a_B37A_48E5082DB748_ | Microsoft.Exchange.2010.ClientAccessImap4 | AvailabilityHealth | True | False | Internal |
| Forensic: OALGen failed to read the OAB version 4 property list from registry. | _9D297337_BF11_420A_BD74_B76909FB4DBE_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: Databases were moved while Test-MAPIConnectivity cmdlet was executing. | _9d50de2f_a18b_4d36_8195_5daa5ebe4f23_ | Microsoft.Exchange.2010.MailboxTestConfig | AvailabilityHealth | True | False | Internal |
| KHI: MSExchangeTransport detected a critical storage error but didn't complete the recovery action. The service has stopped; please investigate. | _9D909D0A_89B0_4090_97D8_7AA4AC6DCDBF_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: Microsoft Exchange EdgeSync service failed to connect to the AD LDS instance on the Edge Transport server. | _9DDE606B_8329_41C8_8714_58E4DF077784_ | Microsoft.Exchange.2010.HubTransportEdgeSync | AvailabilityHealth | True | False | Internal |
| KHI: The Exchange store has failed to start due to an error retrieving the local host information. | _9e0be3b0_c686_4752_ae73_ed6ccb3889c5_ | Microsoft.Exchange.2010.Mailbox.InformationStore | AvailabilityHealth | True | False | Internal |
| Forensic: SMTP authentication errors from this remote site have exceeded the maximum allowed. Exchange is disconnecting from the site. | _9E41F8E0_55CD_46CF_9858_DA062360C885_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: Failed to initialize DSAccess. Proxy address calculation services will not be available on the local Exchange server. | _9EE719A0_E3C9_44C7_A33B_CCFB47B49D1B_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: Delivery Failure Routing 5.4.4 happened over last 5 minutes - Yellow(>1). | _9FC504B9_3332_4773_8297_79CDBA4733FE_ | Microsoft.Exchange.2010.CommonTransport | PerformanceHealth | True | False | Internal |
| Forensic: The topology doesn't have a route to this connector in the routing tables, so the connector will not be used. | _A00D77C6_A774_4DC4_9E0D_9BED0BC160A5_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: LDAP long running operations - sustained for 5 minutes - Red(>100). | _A018B042_20AE_4cd2_99B0_0A152766BC01_ | Microsoft.Exchange.2010.CommonDomainController | PerformanceHealth | True | False | Internal |
| KHI: A POP3 connectivity transaction failure occurred. The session object hasn't been created. | _A0474BE5_42D8_4971_8116_3900A423CF12_ | Microsoft.Exchange.2010.ClientAccessPop3 | AvailabilityHealth | True | False | Internal |
| KHI: Failed to complete Autodiscover request via External Hostnames. | _A04A9A11_B875_4ec4_901C_C07C0381A8C4_ | Microsoft.Exchange.2010.ClientAccessAutoDiscovery | AvailabilityHealth | True | False | Internal |
| Forensic: Name Server Provider Interface (NSPI) Proxy has been forced to terminate some or all worker and listener threads during shutdown. | _A0874139_DF78_40D2_B5A0_C4BEA8ABE1F1_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: EdgeSync EHF synchronization warnings. | _a15af0c0_9c21_42ea_9b1a_fe857371ede7_ | Microsoft.Exchange.2010.HubTransportEdgeSync | AvailabilityHealth | False | False | Internal |
| Forensic: A Send connector error occurred while connecting to the specified server. | _A19F5044_F668_4576_9F8F_326096A4D25D_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: There was a Web Services connectivity (Internal) transaction failure. The credentials supplied can't be used to test Web Services. | _A2081208_6F97_46B5_818B_455AEC4F5D16_ | Microsoft.Exchange.2010.ClientAccessTestConfig | AvailabilityHealth | True | False | Internal |
| Forensic: OABGen detected that the file in the distribution point is corrupted or missing. This OAB will not be published. | _A25C6E20_5DC1_4A71_B2D3_E0C4FEB0B2B0_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: The connection was dropped due to an agent error. | _A2B6C052_25B7_48FB_80D4_35E9D453D4D7_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: The Outlook Web App proxy failed because the Client Access server that was supposed to receive the proxy traffic didn't respond. | _A3294D85_C3A0_44A1_A0DD_A1B5DFF3A2A7_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| KHI: The database is already in use. The service will be stopped. | _A38D3B5B_5627_4C21_8AA7_22592DC64B40_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: The Microsoft Exchange File Distribution service (MSExchangeFDS) isn't running. | _a393ad84_eba1_4d96_9782_113974f0aefc_ | Microsoft.Exchange.2010.ClientAccessServiceMonitoring | AvailabilityHealth | True | False | Internal |
| KHI: An Active Directory search has failed. Cannot access schema information. | _A3D45C91_497F_48B2_B6DF_DBBCC44140AD_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: The Windows Remote Management Service (WinRM) isn't running. | _a4f02f59_88ad_4bd0_86a1_1dc374bd2069_ | Microsoft.Exchange.2010.CommonInternalRoleServices | AvailabilityHealth | True | False | Internal |
| KHI: Delay DSNs - increase over 60 minutes - Red(>20) - Hub Transport. | _A51FEF06_A2F5_48F4_BD78_DF035BCDE72F_ | Microsoft.Exchange.2010.HubTransportDsn | PerformanceHealth | True | False | Internal |
| Forensic: Failed to find source directory or file. | _A629B786_F700_4BE3_A05B_5F53DE13B9E9_ | Microsoft.Exchange.2010.CommonFileDistributionService | AvailabilityHealth | True | False | Internal |
| KHI: Corrupt or missing log files exist on a database copy; a successful failover restored service. | _A6527170_9C70_45c9_AF5C_3266CBCEB9FF_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption | AvailabilityHealth | True | False | Internal |
| Forensic: The connection to the mailbox has failed. | _A7474E12_3DE7_46C0_B356_E8A8BE2C4F89_ | Microsoft.Exchange.2010.ClientAccessActiveSync | AvailabilityHealth | True | False | Internal |
| Forensic: The File Distribution service detected that the manifest file for the UM dial plan is corrupted. The current file synchronization operation is aborted. | _A76FCC80_C060_420B_9897_2660A508E0EF_ | Microsoft.Exchange.2010.CommonFileDistributionService | AvailabilityHealth | True | False | Internal |
| Forensic: An exception occurred when the Hub Transport server tried to load the Exchange topology configuration data. | _A7F5B3A3_6206_4783_A98E_319F1A591892_ | Microsoft.Exchange.2010.HubTransportEdgeSync | AvailabilityHealth | True | False | Internal |
| Forensic: A non-SMTP address space has been detected on the SMTP Send connector that is configured to use DNS for routing messages. The address space will be ignored. | _A8228275_9633_4A50_9E97_13F2220CE791_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: The Prelicensing agent's Web request failed because the URL was redirected. The Prelicensing agent doesn't support URL redirection | _A82C407D_A7C7_4e77_AA11_376C2058FBBA_ | Microsoft.Exchange.2010.HubTransportAgentsMessagingPolicies | AvailabilityHealth | True | False | Internal |
| Forensic: A user mailbox has hit session limits. | _A85A26E8_6B30_444f_A430_19B1241222AF_ | Microsoft.Exchange.2010.Mailbox.MailboxOnDbCopy | AvailabilityHealth | True | False | Internal |
| KHI: Exchange Control Panel connectivity (Internal) transaction failure - Client Access server configuration check failure. | _A85DBD19_4187_4926_8129_C6A31E323BFE_ | Microsoft.Exchange.2010.ClientAccessExchangeControlPanel | AvailabilityHealth | True | False | Internal |
| KHI: A directory error occurred while running the Test-MAPIConnectivity cmdlet. | _a86210c5_1427_41d1_957f_04d86afe8fbc_ | Microsoft.Exchange.2010.Mailbox.MailboxMonitoring | AvailabilityHealth | True | False | Internal |
| Forensic: The Address List service could not find the address list root. | _A86B0D9D_CB93_4EBB_B018_FE1DBEDE44D7_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: A route to the owning server couldn't be found in the routing tables. Messages sent to recipients on this store won't be routed. | _A8A8C346_B0E5_40D2_AD56_94467D105575_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: The Outlook Web App proxy failed because the user for whom the traffic was proxied is a member of too many groups. | _A8F8668E_2DD2_437F_88BD_C2BC85648B94_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| KHI: System Attendant failed to add the local computer as a member of the Active Directory service group object. | _A8FF8474_0A25_4752_BEDF_11FEAF631EC3_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: Name Service Provider Interface (NSPI) Proxy was unable to set the remote procedure call (RPC) endpoint for transport. | _A973C189_3F57_47D6_ACE3_7083A6E43726_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: Transient connection failure with the Operations Manager Root Management Server. | _A9AFFD9F_0F45_405e_BE52_DD1180D8346B_ | Microsoft.Exchange.2010.MonitoringCorrelationEngine | AvailabilityHealth | False | False | Internal |
| KHI: A reseed operation (Update-MailboxDatabaseCopy) is required due to a detected error in the local database copy; the copy is failed and suspended. | _a9b0e0f6_1313_4d7e_9bd6_38de868aaaac_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopy | AvailabilityHealth | True | False | Internal |
| Forensic: A recipient object in Active Directory isn't valid. It has been removed from the result set. | _A9C1C0F6_932D_458C_B221_CB8A01403621_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| KHI: The Microsoft Exchange Mail Submission service isn't running. Mail submission to the Hub Transport server won't occur until service is started. | _a9c5fb92_9099_4b4c_b53e_7f6ef4f9d57f_ | Microsoft.Exchange.2010.Mailbox.MailSubmission | AvailabilityHealth | True | False | Internal |
| Forensic: SMTP rejected a mail because the Active Directory lookup for the FROM address failed: the send-on-behalf-of check returned invalid data. | _AA2C48CC_2B95_45B1_9343_B7E438FB0D76_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: SendProtocolLogPath has been set to null, which disables protocol logging for all Send connectors on the server. No send protocol log will be written. | _AA6FBBD7_4118_4336_B86B_43B2ED26D8E8_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: LDAP long running operations - sustained for 5 minutes - Yellow(>50). | _AA86D62F_99CB_4bd3_ABB2_9D213FB99C4F_ | Microsoft.Exchange.2010.CommonDomainController | PerformanceHealth | True | False | Internal |
| KHI: Can't connect to Operations Manager Root Management Server. | _AAFFF85B_1C23_44b2_9C47_8C7B07E29801_ | Microsoft.Exchange.2010.MonitoringCorrelationEngine | AvailabilityHealth | True | False | Internal |
| Forensic: Unable to complete the opt-in process for Microsoft Update. | _AB191DE4_53EA_4F86_A7DE_3E5D6F635588_ | Microsoft.Exchange.2010.CommonTransportAgents | AvailabilityHealth | True | False | Internal |
| NonServiceImpacting: Read-only files have been found in the Pickup directory. | _AB58ABB8_9305_4EC6_AAE7_24CB69537EDC_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: A routing group for the specified Exchange server couldn't be determined in the routing tables. | _AC37BF41_C0ED_43A2_A2FC_A2A29AAF0992_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: LDAP notify call failed. In the absence of other events, this event shouldn't impact mail flow. Review the Application log for related events. | _ACBCD192_C6E5_416B_BA4A_7181CA696714_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| KHI: The Microsoft Exchange Address Book service (MSExchangeAB) isn't running. | _acf19cd8_7644_4f64_a875_03e7ef55e33c_ | Microsoft.Exchange.2010.ClientAccessServiceMonitoring | AvailabilityHealth | True | False | Internal |
| Forensic: The installation of the Microsoft Exchange Anti-Spam Update service failed with an error. | _AD7E0426_3081_401B_B726_08697289DDE0_ | Microsoft.Exchange.2010.CommonTransportAgents | AvailabilityHealth | True | False | Internal |
| Forensic: Name Service Provider Interface (NSPI) Proxy can contact the global catalog, but it does not support the NSPI service. | _AE159063_2811_4E1B_BEBE_621262B72917_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: The Microsoft Exchange Mailbox Replication service isn't running. | _aec6c194_d147_4e99_b36d_9ee515c6e63b_ | Microsoft.Exchange.2010.ClientAccessMailboxReplicationService | AvailabilityHealth | True | False | Internal |
| Forensic: Exchange Direct Push has detected that the minimum heartbeat interval is set to a value that is lower than the minimum allowable value. | _AECB623A_4E5E_4C0F_AEAA_0DCB878728AB_ | Microsoft.Exchange.2010.ClientAccessActiveSync | AvailabilityHealth | True | False | Internal |
| KHI: Percent of Active Hub Servers over last 30 minutes - Red(<10) - Edge Server. | _AF52BE08_8E71_4d23_8DC0_1CC2BC50F4D7_ | Microsoft.Exchange.2010.Mailbox.MailSubmission | PerformanceHealth | True | False | Internal |
| KHI: Failed to sync entries to EHF. | _AF8995E2_DDDD_4BB2_B108_963142F2469C_ | Microsoft.Exchange.2010.HubTransportEdgeSync | AvailabilityHealth | True | False | Internal |
| KHI: Transport availability impacted - Server down over last 5 minutes - Red(<50). | _AFD0F851_175E_422f_9D68_8A392BAE2229_ | Microsoft.Exchange.2010.CommonTransport | PerformanceHealth | True | False | Internal |
| Forensic: A non-SMTP Gateway Connection failure has occurred on the specified connector: The Drop Directory Quota limit has been exceeded. | _AFE36677_13C0_4848_B380_2D1A2729A6F6_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: The Microsoft Exchange Transport Log Search service failed to read configuration from Active Directory. | _B048F00C_2099_49E1_91B5_88221308B369_ | Microsoft.Exchange.2010.CommonTransportLogSearch | AvailabilityHealth | True | False | Internal |
| Forensic: The connection between the Client Access server and the Mailbox server failed. | _B04D89DC_6BC5_4173_8622_1D628B70F924_ | Microsoft.Exchange.2010.ClientAccessActiveSync | AvailabilityHealth | True | False | Internal |
| KHI: The Exchange Transport process isn't responding and will be forced to shut down. | _B06EC0E4_45D9_45A3_BF1E_51F8AB2C6F66_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: Transport latency impacted - Categorizer for 99th percentile of messages not meeting SLA over last 15 minutes - Yellow(>10). | _B0789F76_7C6F_4d9b_B613_A0F1722DCF6F_ | Microsoft.Exchange.2010.CommonTransport | PerformanceHealth | True | False | Internal |
| Forensic: Exchange Control Panel failed to find a Client Access server in the same site as a user's mailbox. Review MSExchange Control Panel event 19 for the cause. | _B09E4AA9_A2A8_4fcb_913F_41465581D5BF_ | Microsoft.Exchange.2010.ClientAccessExchangeControlPanel | AvailabilityHealth | True | False | Internal |
| Forensic: LDAP Searches timed out per minute - sustained for 5 minutes - Yellow(>10). | _B0A71DC1_F1DB_4f64_A928_0E80073595FD_ | Microsoft.Exchange.2010.CommonDomainController | PerformanceHealth | True | False | Internal |
| NonServiceImpacting: A message was rejected by the remote server. This message will be deferred and retried because it was marked for retry if rejected. | _B235CC79_3852_4E0C_B51F_2254774D9CEA_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: Incremental reseed initial checks failed; the passive database copy cannot be re-synchronized with the active database copy. | _B286EDB3_D68E_4ca9_B90F_8433652D4D89_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopy | AvailabilityHealth | True | False | Internal |
| KHI: LDAP Fatal errors per minute - sustained for 5 minutes - Red(>10). | _B29CA4A5_27E8_4772_A1C8_B80BB528E8DC_ | Microsoft.Exchange.2010.CommonDomainController | PerformanceHealth | True | False | Internal |
| KHI: An error occurred while executing the Test-OWAConnectivity (Internal) cmdlet. | _B2AD4F21_F51E_476C_AEDF_9C8FB3832EFB_ | Microsoft.Exchange.2010.ClientAccessTestConfig | AvailabilityHealth | True | False | Internal |
| Forensic: Name Server Provider Interface (NSPI) Proxy is unable to run because a worker thread failed to start. | _B30A83F8_C635_41B3_8BF6_BCD573786F4A_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: The Exchange store failed to start because the RPC listener registration failed. | _b3998d8b_df68_4199_a25f_f348cffdbdf5_ | Microsoft.Exchange.2010.Mailbox.InformationStore | AvailabilityHealth | True | False | Internal |
| KHI: An IP gateway or IP PBX didn't respond to a SIP OPTIONS request from the Unified Messaging server. | _B3B16112_D6EB_4B1F_AFD4_C33FE14C8667_ | Microsoft.Exchange.2010.UnifiedMessaging.Availability.Gateway | AvailabilityHealth | True | False | Internal |
| Forensic: Couldn't discover the Active Directory topology in a timely manner. | _B41B17FD_B3E2_4D3A_B6CE_0E76A4201D2B_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| KHI: LDAP Searches timed out per minute - sustained for 5 minutes - Red(>20). | _B4891BB1_C37A_4249_ACF8_D8C236494764_ | Microsoft.Exchange.2010.CommonDomainController | PerformanceHealth | True | False | Internal |
| KHI: A POP3 connectivity transaction failure occurred. The Client Access server wasn't specified. | _B4EC1F25_98AA_44e1_84ED_767E1F749194_ | Microsoft.Exchange.2010.ClientAccessPop3 | AvailabilityHealth | True | False | Internal |
| Forensic: SMTP rejected a mail because the Active Directory lookup for the sender address returned validation errors. | _B4FCDD22_D8B8_4561_AEFF_2D1824B61C75_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: The Microsoft Exchange Unified Messaging service failed to start. | _B534D3DC_E3B9_49E0_B5A4_1D31559EA10D_ | Microsoft.Exchange.2010.UnifiedMessaging.Availability.Service | AvailabilityHealth | True | False | Internal |
| KHI: The Microsoft Exchange Mailbox Replication service isn't scanning MDB queues for jobs. | _b54f9f66_df9e_46ff_96a8_feaa4bbed681_ | Microsoft.Exchange.2010.ClientAccessMailboxReplicationService | AvailabilityHealth | True | False | Internal |
| KHI: Outlook Web App failed to initialize. | _B5752ED1_4803_4575_B2EA_F13907E91B3D_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: There's an error in your Outlook Web App configuration. The authentication type specified in the Web.config file isn't correct. | _B5D9A4CE_DB57_4BA2_A834_C071C7DB2FFB_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| KHI: Failed to execute the Test-ReplicationHealth diagnostic cmdlet. | _b60902a7_999b_4b2f_8294_86467325555c_ | Microsoft.Exchange.2010.MailboxTestConfig | AvailabilityHealth | True | False | Internal |
| Forensic: Transport found a connector with source servers belonging to multiple Active Directory sites. Transport only uses servers in site with least-cost route. | _B64A3733_B776_48DF_8B37_E9592E5D148D_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: The provider that is required for the Autodiscover service is unavailable. | _B66F039E_0E0E_44D3_ACB0_DC13906C1154_ | Microsoft.Exchange.2010.ClientAccessAutoDiscovery | AvailabilityHealth | True | False | Internal |
| KHI: Unexpected dismount of a database copy. | _B6C05632_F686_43b2_B177_577F3FAB8B38_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopy | AvailabilityHealth | True | False | Internal |
| KHI: Retry Non-Smtp Delivery Queue Length - sustained for 30 minutes - Red(>1) - Hub Transport. | _B70886DD_AA15_48d6_8EF1_4FC79DBF3B16_ | Microsoft.Exchange.2010.HubTransportQueues | PerformanceHealth | True | False | Internal |
| Forensic: Monitor reset failed. | _B70F7E3B_DB09_46fd_8B68_C9FABBFED50B_ | Microsoft.Exchange.2010.MonitoringCorrelationEngine | AvailabilityHealth | False | False | Internal |
| KHI: Unable to execute the Test-EdgeSyncEhf diagnostic cmdlet. | _b7126339_fce6_4e8b_a40b_4957f212f017_ | Microsoft.Exchange.2010.HubTransportEdgeSync | AvailabilityHealth | False | False | Internal |
| Forensic: The proxy request has failed due to an invalid SSL certificate on the destination Client Access server. | _B754CB76_D6A2_4DB3_BB44_BFC2A20187D3_ | Microsoft.Exchange.2010.ClientAccessActiveSync | AvailabilityHealth | True | False | Internal |
| Forensic: System Attendant failed to start the server. | _B77AB0BE_EF58_487C_9EDF_E5D31213B6B0_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: Transport IsMemberOfResolver ExpandedGroups Cache nearing capacity - Yellow(>66). | _B77D8E56_D44C_4e46_B8D8_54BD2DC2C48F_ | Microsoft.Exchange.2010.CommonTransport | PerformanceHealth | True | False | Internal |
| KHI: Database copy is suspended. The database copy isn't keeping up with the changes on the active database copy. | _b7862783_2e2c_452f_9062_c674bfae6f99_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopy | PerformanceHealth | True | False | Internal |
| Forensic: Delivery Failure Resolver 5.1.4 happened over last 5 minutes - Yellow(>0). | _B7B5FB07_B964_4112_9FFD_5342A1D5E623_ | Microsoft.Exchange.2010.CommonTransport | PerformanceHealth | True | False | Internal |
| KHI: Exchange Control Panel connectivity (Internal) transaction failure - The test credentials can't be used to test Exchange Control Panel. | _B7CF638F_AE9E_4389_BD3A_EADC8EA98495_ | Microsoft.Exchange.2010.ClientAccessTestConfig | AvailabilityHealth | True | False | Internal |
| KHI: Hard I/O error will dismount or terminate replication on a local database copy. | _b82f2784_48e8_4a13_93f8_76fca5f29af5_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption | AvailabilityHealth | True | False | Internal |
| KHI: Exchange couldn't find a certificate in the personal store on the local computer. | _B847294A_09AD_4E2D_A7C8_3066410359B1_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: A serious I/O error (lost flush) was detected on a database copy; all copies of the database may be impacted. | _B8D0D08A_98AC_4162_8254_3E5E1406F647_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption | AvailabilityHealth | True | False | Internal |
| Forensic: LDAP Disconnects per minute - sustained for 5 minutes - Yellow(>5). | _B94014AE_4EE0_4675_92B4_B71440F75CD0_ | Microsoft.Exchange.2010.CommonDomainController | PerformanceHealth | True | False | Internal |
| KHI: Outlook Web App failed to initialize. A forms registry file isn't valid. | _B99C0462_6634_4CF6_8D22_737E352B80F5_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: Outlook Web App encountered an error when a user tried to change the Outlook Web App language setting. | _B9E50DAC_4B7D_4E5C_B093_C470FDB5CCB8_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| KHI: An IMAP4 connectivity transaction failure occurred. The specified server is not a Client Access server. | _BA5CFC17_5569_46cd_831C_9C8375F5B543_ | Microsoft.Exchange.2010.ClientAccessImap4 | AvailabilityHealth | True | False | Internal |
| KHI: Missing Availability Service Configuration Information for the Current Forest | _BA6E57EF_97A2_44af_951E_76F61219C511_ | Microsoft.Exchange.2010.ClientAccessAvailabilityService | AvailabilityHealth | True | False | Internal |
| Forensic: The 'PreloadBaseDNs' and 'PreloadFilters' registry keys don't contain the same number of entries. | _BA7E097D_D523_4909_9B04_E9AD2CC93760_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| Forensic: Exchange was unable to load the routing performance counters. | _BAD37FE4_26F8_4F44_BF65_FD816D128FD2_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: Exchange doesn't have the required permissions to access the AD RMS server. Contact the AD RMS administrator for help. | _BAEC1D94_AC3E_4cfd_A78D_D90CA8AAC51A_ | Microsoft.Exchange.2010.HubTransportAgentsMessagingPolicies | AvailabilityHealth | True | False | Internal |
| KHI: A user mailbox has hit recoverable items warning quota limit. | _bb26bbcc_e86a_4db8_8737_9be12b9a95ca_ | Microsoft.Exchange.2010.Mailbox.MailboxOnDbCopy | AvailabilityHealth | True | False | Internal |
| Forensic: The Availability service couldn't successfully send a proxy Web request to another instance of the Availability service. | _BB593105_B186_4239_B1BE_27BA0BD01D00_ | Microsoft.Exchange.2010.ClientAccessInformationWorker | AvailabilityHealth | True | False | Internal |
| KHI: Outlook Web App failed to initialize. A forms registry file is not valid. | _BB65ACCF_C264_40BF_90E4_CCD85A4BD078_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: An error occurred when the Referral Interface called DSAccess to obtain a list of available global catalog servers. | _BBF45A98_5B62_47C7_8114_E2C1500E0D12_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: A message from a domain-secured domain failed to authenticate because the TLS certificate does not contain the domain name. | _BBF9B9A7_4C4D_4A88_B696_EFE91376BB3A_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: The connection to a secure domain failed because the Transport Layer Security negotiation was unsuccessful. | _BC0180D5_8CD7_49D7_964F_EF7F51657864_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: There's an invalid scheme in the Exchange Control Panel proxy URL. See MSExchange Control Panel event 28 for more details. | _BC1DA5B5_9F96_422c_8A1D_109B098C7B48_ | Microsoft.Exchange.2010.ClientAccessExchangeControlPanel | AvailabilityHealth | True | False | Internal |
| Forensic: Disk \% Free Space low - Yellow(<15\%). | _BC24ECC1_71E8_4E9E_B038_EEB45B3AC6B6_ | Microsoft.Exchange.2010.CommonServer | PerformanceHealth | False | False | Internal |
| Forensic: The configuration domain controller specified in a call to SetConfigDCName wasn't found in the Sites container in Active Directory. | _BD8A55E8_16F5_4DBC_A6CC_A914259C6267_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| KHI: A Web Services connectivity (Internal) transaction failure occurred. There was an Autodiscover failure. | _BDD568E5_0395_4BCA_AE83_1586966BC79C_ | Microsoft.Exchange.2010.ClientAccessWebServices | AvailabilityHealth | True | False | Internal |
| Forensic: Largest Delivery Queue Length - sustained for 5 minutes - Yellow(>200) - Edge Transport. | _BDDC04AE_8194_4452_8631_974F39CB9433_ | Microsoft.Exchange.2010.EdgeTransportQueues | PerformanceHealth | True | False | Internal |
| KHI: Exchange Control Panel connectivity (External) transaction failure - The test credentials can't be used to test Exchange Control Panel. | _BE1ABFD1_3BF9_4955_A442_D49B31A4EF70_ | Microsoft.Exchange.2010.ClientAccessTestConfig | AvailabilityHealth | True | False | Internal |
| KHI: Outlook Web App failed to initialize. There are multiple forms registries with the same name. | _BE83F6CA_0356_4E6D_936E_ADCFA3112A37_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: Failed to remove continuous replication files for a database copy. | _BEBC2FE7_5420_44f0_A6CD_CA63CAB55CC0_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopy | AvailabilityHealth | True | False | Internal |
| KHI: An IMAP4 connectivity transaction failure occurred. A security error was found. | _BECA4628_4D97_4a65_8398_FCD8DEE0D6D1_ | Microsoft.Exchange.2010.ClientAccessImap4 | AvailabilityHealth | True | False | Internal |
| KHI: The database copy isn't replaying log files fast enough to keep up or catch up with the changes being made to the active database copy. | _bf06befc_c495_4940_b8f0_eb2ba802579a_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyReplay | PerformanceHealth | True | False | Internal |
| KHI: The Microsoft Exchange Throttling service (MSExchangeThrottling) isn't running. | _bf7585b1_cb5b_4e44_b94f_4d4fb54009ba_ | Microsoft.Exchange.2010.Mailbox.ServiceMonitoring | AvailabilityHealth | True | False | Internal |
| Forensic: Poison Queue Length - sustained for 5 minutes - Yellow(>1) - Hub Transport. | _BF77B5F3_C359_4390_9690_BFB295230C46_ | Microsoft.Exchange.2010.HubTransportQueues | PerformanceHealth | True | False | Internal |
| KHI: The passive database copy is experiencing a critically high database read latency. The rate is sustained for at least 5 minutes. | _bf98c53e_bb5a_4d97_8222_93bdc945d864_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyEdbLogicalDiskPerformance | PerformanceHealth | True | False | Internal |
| Forensic: Name Service Provider Interface (NSPI) Proxy is unable to run because the Winsock subsystem failed to initialize. | _C02DEE79_6FDB_4C3F_A8A2_B103CCCFB57D_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: At startup, the Microsoft Exchange Replication service's VSS Writer failed to initialize. VSS backups of passive mailbox database copies are disabled. | _c0fc6215_600b_483f_ab54_fcc204cdde5e_ | Microsoft.Exchange.2010.Mailbox.ReplayService | AvailabilityHealth | True | False | Internal |
| KHI: MSExchangeAssistants Failed Requests - Resource Booking | _C17004A8_EE28_4c60_9B1E_1FFE1F8B1101_ | Microsoft.Exchange.2010.Mailbox.Assistants | PerformanceHealth | True | False | Internal |
| KHI: Outlook Web App connectivity (External) transaction failures. | _C187B89E_5B8B_4F1F_A2CD_4F0DCBA0ADE6_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: The Content Filter agent couldn't read the current mode. Recent changes to the mode might not be used. Restart the Microsoft Exchange Transport service. | _C22FD4DA_B592_4B25_92E3_958DCA25AB31_ | Microsoft.Exchange.2010.CommonTransportAgents | AvailabilityHealth | True | False | Internal |
| KHI: MSExchangeAssistants CPU | _C25F4AE8_46AE_4b85_8C52_F1C84DCFCC1A_ | Microsoft.Exchange.2010.Mailbox.Assistants | PerformanceHealth | True | False | Internal |
| KHI: The database checkpoint file (.chk) is missing or corrupted. The Microsoft Exchange Transport service is shutting down. | _C2F64119_1FCB_45AF_B69E_8D570F2A5888_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: A specific DLL cannot be loaded. Review the error in the event description for details about the specific DLL that could not be loaded. | _C33C0F3F_48DA_4344_BC95_B65B6EFE7700_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: An unhandled exception occurred in the Autodiscover service. For more information, contact Microsoft Product Support. | _C340C8EB_34D2_4262_B01F_6F165D4DEA6A_ | Microsoft.Exchange.2010.ClientAccessAutoDiscovery | AvailabilityHealth | True | False | Internal |
| Forensic: Single page restore initiated to correct an error in a database copy. | _C39E6C48_22EB_49da_9A0D_65351A11FBFC_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopy | AvailabilityHealth | True | False | Internal |
| Forensic: Credentials used by EdgeSync have either expired or haven't been created. You will need to resubscribe the Edge Transport server. | _C3AF4230_2967_4F9C_98CE_99F10AC1D3D1_ | Microsoft.Exchange.2010.HubTransportEdgeSync | AvailabilityHealth | True | False | Internal |
| Forensic: The Microsoft Exchange Transport Log Search service failed to access a log file due to an I/O error. | _C3C42908_EBAA_4D31_BBB6_0DE2A9475760_ | Microsoft.Exchange.2010.CommonTransportLogSearch | AvailabilityHealth | True | False | Internal |
| KHI: WebServices connectivity (Internal) transaction failures. | _C3CD6612_B3FE_4126_918F_90323C50E861_ | Microsoft.Exchange.2010.ClientAccessWebServices | AvailabilityHealth | True | False | Internal |
| Forensic: The cache or hash table ran out of memory. Restart the Microsoft Exchange Active Directory Topology service. | _C3EFB5B5_61D9_45F7_84E4_CE6A0F8B2485_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| Forensic: Delivery Failure Foreign Connector happened over last 5 minutes - Yellow(>5). | _C41F1F34_FBA2_470d_A2F8_26A2F62A322E_ | Microsoft.Exchange.2010.CommonTransport | PerformanceHealth | True | False | Internal |
| Forensic: The Exchange store has deadlocked. | _c43fe0f7_0fde_49a7_893d_8adc8811584f_ | Microsoft.Exchange.2010.Mailbox.InformationStore | PerformanceHealth | True | False | Internal |
| Forensic: Internal cache error. Hash table value is incorrect. Restart Active Directory Topology service or restart server. Check System log for hardware errors. | _C4426946_C6AD_494F_8F97_65E8E63228B9_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| NonServiceImpacting: There was an Outlook Web App connectivity (External) transaction failure. The Test-OWAConnectivity cmdlet must be run on a Client Access server. | _C449F79A_1FCD_4641_813E_D72D19353DC0_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| KHI: Failed to execute the Test-EdgeSyncEhf diagnostic cmdlet. | _c4b3c56b_c302_4c80_8d09_56a2dd47a98f_ | Microsoft.Exchange.2010.HubTransportEdgeSync | AvailabilityHealth | False | False | Internal |
| Forensic: Retry Remote Delivery Queue Length - sustained for 5 minutes - Yellow(>1) - Hub Transport. | _C4C17DC5_7F23_43A5_AE5B_6A27C630FA1C_ | Microsoft.Exchange.2010.HubTransportQueues | PerformanceHealth | True | False | Internal |
| KHI: Corrupt or missing log files exist on a database copy; a successful failover restored service. | _C4DE92B1_510C_4b75_8558_22DABAD9D3D4_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption | AvailabilityHealth | True | False | Internal |
| Forensic: The remote forest AvailabilityAddressSpace object for proxying a cross-forest request couldn't be found. | _C4EBFFC8_1FAA_42EF_A5A7_0A9E9C4BBA16_ | Microsoft.Exchange.2010.ClientAccessInformationWorker | AvailabilityHealth | True | False | Internal |
| Forensic: Can't find the target bridgehead server for Routing Group connector in the routing tables. Ignoring the target bridgehead server. | _C518BA4D_3A9C_4955_BEE4_3B726D297C06_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: Microsoft Exchange Transport is rejecting messages because the available disk space has dropped below the configured threshold. | _C54C75B0_8244_4FAE_8761_72C062C59A36_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: The topology doesn't have a route to an Exchange 2003 server from the Routing Group in the routing tables. The recipients will not be routed to this server. | _C55E9F95_DB43_4198_BEFD_8040231D7069_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: Exceeded the supported mount limit of database copies on this server. | _C5BCF28B_6591_44e5_9733_C28256B9D5BB_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopy | AvailabilityHealth | True | False | Internal |
| KHI: The SmtpReceive process failed to start listening on a configured binding because the specified address is already in use. | _C5D42171_F9B8_4C11_8DB7_9697330CB31D_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: Indexing Backlog: Age of the Last Notification Indexed (>3hr backlog for 60min): Please restart the MS Search (Exchange) and Microsoft Exchange Search Indexer services. | _C5F9DCF5_DE06_4ac3_BC17_E3BC0E8925E6_ | Microsoft.Exchange.2010.Mailbox.DatabaseSearchCopy | PerformanceHealth | True | False | Internal |
| KHI: An Outlook Web App connectivity (Internal) transaction failure occurred. The test credentials can't be used to test Outlook Web App. | _C63CEE89_982A_4B91_96A8_D48335172FEA_ | Microsoft.Exchange.2010.ClientAccessTestConfig | AvailabilityHealth | True | False | Internal |
| Forensic: Name Server Provider Interface (NSPI) Proxy was only able to send a portion of a packet. The remainder of the packet will be sent when the network is ready. | _C6E0AE12_9830_4E77_84EB_EF2A5DA21A52_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: The Content Filter agent couldn't be initialized because ExSMime.dll couldn't be initialized. | _C7136132_3E7A_42FE_8F7F_374F904491A9_ | Microsoft.Exchange.2010.CommonTransportAgents | AvailabilityHealth | True | False | Internal |
| Forensic: The Active Directory site for the specified Exchange server was not determined from the routing tables. | _C732A60D_A2FF_4DE0_B737_E38A739D2C48_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: The Microsoft Mail Submission Service encountered an exception when trying to load network topology information. | _c74e136f_dd70_4ebc_98b3_306dad023708_ | Microsoft.Exchange.2010.Mailbox.MailSubmission | AvailabilityHealth | True | False | Internal |
| KHI: A POP3 connectivity transaction failure occurred. The version of the server is older than the supported versions. | _C7B24DC0_12D1_4336_859E_D502574B8573_ | Microsoft.Exchange.2010.ClientAccessPop3 | AvailabilityHealth | True | False | Internal |
| KHI: MSExchangeAssistants Failed Requests - Calendar Assistant | _C7EB370F_1653_484d_B446_AA57B8B8E5AE_ | Microsoft.Exchange.2010.Mailbox.Assistants | PerformanceHealth | True | False | Internal |
| KHI: MS Search (Exchange) has reached the allocated memory cap. | _C803B727_A78D_4ce1_A630_B0BA9C0495A7_ | Microsoft.Exchange.2010.Mailbox.ContentIndexingService | AvailabilityHealth | True | False | Internal |
| KHI: The Microsoft Exchange Speech Engine rejected a call | _c820214e_7678_4718_bf3a_bdf653794e53_ | Microsoft.Exchange.2010.UnifiedMessaging.Telephony.Inbound | AvailabilityHealth | True | False | Internal |
| Forensic: OALGen is running on a passive cluster node. | _C869F45E_9864_44F3_9C23_0ADDE805759B_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: The database copy is experiencing an unusually high log generation checkpoint depth for a sustained period of at least 15 minutes. | _c8bad9bc_dfad_4d6d_901b_0a344e7970e5_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption | PerformanceHealth | True | False | Internal |
| KHI: The Microsoft Exchange Service Host service (MSExchangeServiceHost) isn't running. | _c9086eb9_f237_4e6a_9a9c_a62f4cc4adb0_ | Microsoft.Exchange.2010.CommonServiceMonitoring | AvailabilityHealth | True | False | Internal |
| Forensic: Active Non-Smtp Delivery Queue Length - sustained for 5 minutes - Yellow(>200) - Hub Transport. | _C91E9AFA_E751_4858_9AC8_E9B685796241_ | Microsoft.Exchange.2010.HubTransportQueues | PerformanceHealth | True | False | Internal |
| KHI: The Test-ECPConnectivity (External) cmdlet failed to run. | _C94C33BA_D1F7_41DF_839B_8F20C796CAB8_ | Microsoft.Exchange.2010.ClientAccessTestConfig | AvailabilityHealth | False | False | Internal |
| Forensic: OABGen failed to find or open the OAB version 4 manifest file. | _C99021E9_7078_4D22_8334_B96E0DB4C3D0_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: Failed to execute the Test-ActiveSyncConnectivity (Internal) diagnostic cmdlet. | _CB004129_56ED_4E76_88D8_C344FB67DD77_ | Microsoft.Exchange.2010.ClientAccessTestConfig | AvailabilityHealth | True | False | Internal |
| KHI: The Microsoft Exchange Transport Service (MSExchangeTransport) isn't running. | _cb141f89_77c9_4d5b_a744_1e4c6df45204_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: The New Topology couldn't be generated. Make sure that the local domain controllers are reachable and running. | _CB82F295_AF4E_4E39_AE09_CEE6A65E707C_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| KHI: Outlook Web App connectivity (External) transaction failures. | _CB86B85A_AF81_43FC_9B07_3C6FC00D3D42_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| KHI: The database copy is low on log volume space. The volume has reached warning levels (50\% free). | _cc4f2e1a_817c_44d9_b527_4216676b3bfd_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyLogLogicalDiskSpace | PerformanceHealth | True | False | Internal |
| Forensic: The MSExchangeTransport Pickup process does not have the necessary "Read" permission and "Delete Subfolders and Files" permission for the pickup directory. | _CC880966_03ED_46A7_A116_F5E8DDC1ADBE_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: Transaction failures occurred during MAPI connectivity testing. | _cc976087_cb72_41ca_b100_92c5fa41ed1a_ | Microsoft.Exchange.2010.Mailbox.MailboxMonitoring | AvailabilityHealth | True | False | Internal |
| KHI: LDAP long running operations - sustained for 5 minutes - Red(>100). | _CDD28006_52A3_4276_8B56_EBB98E6670D6_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | PerformanceHealth | False | False | Internal |
| Forensic: The Non-SMTP Gateway Connection failed because the drop directory filename exceeds the system-defined maximum length. | _CEE2E129_DCCC_4284_BEE8_37E064087589_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: The Content Filter agent couldn't be initialized because sufficient memory couldn't be allocated for an internal buffer. | _CF40D94B_1555_41B0_8411_D660176E4D72_ | Microsoft.Exchange.2010.CommonTransportAgents | AvailabilityHealth | True | False | Internal |
| Forensic: Exchange was unable to determine the version of the Microsoft Update agent or the Microsoft Update agent is not current. | _CF447F7A_A76B_485C_B63A_431D02181D2D_ | Microsoft.Exchange.2010.CommonTransportAgents | AvailabilityHealth | True | False | Internal |
| KHI: Activation of transport components failed because of an unexpected exception. | _CF45C563_69B2_4DB5_9912_722ED6F441D1_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: The Microsoft Exchange Information Store service (MSExchangeIS) isn't running. | _cf8bc72a_3be8_4431_8b99_b810888fd790_ | Microsoft.Exchange.2010.Mailbox.ServiceMonitoring | AvailabilityHealth | True | False | Internal |
| KHI: MSExchangeTransport has detected a critical storage error but won't take recovery actions. The service has stopped; please investigate. | _CF9BC4E8_193F_4856_97EE_0127B67410ED_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: An Outlook Web App configuration setting isn't valid. The authentication type specified on the Outlook Web App virtual directory is Anonymous. | _CFF22C2D_3C03_4F86_ADDA_2EA28F0E3488_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: An IMAP4 connectivity transaction failure occurred. The specified mailbox database is a recovery mailbox database, so it won't be monitored. | _D0395269_B459_402b_BAB1_9E681DF8A12A_ | Microsoft.Exchange.2010.ClientAccessImap4 | AvailabilityHealth | True | False | Internal |
| KHI: The Microsoft Exchange Credential service (MSExchangeEdgeCredential) isn't running. | _d0705a18_3c3b_4916_b893_8c967de4b8e4_ | Microsoft.Exchange.2010.EdgeTransportServiceMonitoring | AvailabilityHealth | True | False | Internal |
| KHI: The Microsoft Exchange Replication service is not running. | _d071e080_b6b5_49e7_abcd_f55c57117b70_ | Microsoft.Exchange.2010.Mailbox.ReplayService | AvailabilityHealth | True | False | Internal |
| KHI: The Microsoft Exchange Replication service wasn't able to enable the Tasks RPC listener. | _d0adb6d7_2c2f_454f_87c1_de5c474eeb23_ | Microsoft.Exchange.2010.Mailbox.ReplayService | AvailabilityHealth | True | False | Internal |
| KHI: Transport categorizer jobs are partially unavailable - percentage of available categorizer jobs - Yellow(<99). | _D2113098_D0C5_4786_82C1_306905CA1BF0_ | Microsoft.Exchange.2010.CommonTransport | PerformanceHealth | True | False | Internal |
| KHI: OABGen failed to load the OAB version 4 manifest file. | _D2405780_498B_47e3_B9FD_A64B80DE77B6_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: Couldn't initialize the the Content Filter agent. Check the access control lists (ACLs) on the files. | _D240AD5E_BC03_4A15_8F74_148E6281A554_ | Microsoft.Exchange.2010.CommonTransportAgents | AvailabilityHealth | True | False | Internal |
| KHI: IMAP4 connectivity transaction failures. | _D27F04D5_15C1_44e8_A15C_043CD7F19BA8_ | Microsoft.Exchange.2010.ClientAccessImap4 | AvailabilityHealth | True | False | Internal |
| Forensic: An exception occurred and was handled by Exchange ActiveSync. | _D287F09E_78F0_4884_9D31_772F8A0F36BF_ | Microsoft.Exchange.2010.ClientAccessActiveSync | AvailabilityHealth | True | False | Internal |
| Forensic: A search request that was sent to the server running Active Directory didn't provide a result within a reasonable time period. | _D2B62A01_2927_4B5E_83FF_A546AA587FAF_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| KHI: Exchange Control Panel connectivity (Internal) transaction warnings. | _D2FCB90D_426B_4A8C_AA6C_955E4B2E4916_ | Microsoft.Exchange.2010.ClientAccessExchangeControlPanel | AvailabilityHealth | True | False | Internal |
| Forensic: The MAD Free Busy DLL is missing or failed to start properly. | _D39DEB77_7BDC_4B08_A789_2642EFE40134_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: Outbound authentication failed at the send connector. It may have failed to acquire a Kerberos ticket for the destination target name. | _D3AD2DAB_AC7C_4439_AFBB_7B3B66406F26_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: File Distribution Service: Temporarily unable to connect to Active Directory to read configuration data. Will automatically retry in one minute. | _D49298BE_0CA4_4F20_AD0C_DFCF0E439B67_ | Microsoft.Exchange.2010.CommonFileDistributionService | AvailabilityHealth | True | False | Internal |
| Forensic: An incorrect file version was detected. Review the event description for more information. | _D4C885E3_6A22_4946_A268_87FE12695E74_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: The Prelicensing agent didn't retrieve a license because the content was published for an untrusted AD RMS server. Contact the AD RMS administrator. | _D4E93A3B_A52D_4706_8161_4FE8A9B655CC_ | Microsoft.Exchange.2010.HubTransportAgentsMessagingPolicies | AvailabilityHealth | True | False | Internal |
| KHI: The Microsoft Exchange Mailbox Assistants service (MSExchangeMailboxAssistants) is not running. | _d5515d9f_931d_44ab_bac9_7981c189eb2d_ | Microsoft.Exchange.2010.Mailbox.Assistants | AvailabilityHealth | True | False | Internal |
| Forensic: Outlook Web App isn't available for one of the mailboxes in a mailbox database. | _D551B449_CD5B_40FC_B7B5_97BB6446F431_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: The provider configuration for the Autodiscover service is not valid. To obtain a valid DLL, contact Microsoft Product Support. | _D5647FF8_5A99_4F6D_8271_38F2DB4043D8_ | Microsoft.Exchange.2010.ClientAccessAutoDiscovery | AvailabilityHealth | True | False | Internal |
| Forensic: Retry Non-Smtp Delivery Queue Length - sustained for 5 minutes - Yellow(>200) - Hub Transport. | _D5877AD5_82F1_4A80_8C8D_C04DAA16BA42_ | Microsoft.Exchange.2010.HubTransportQueues | PerformanceHealth | True | False | Internal |
| KHI: LDAP Search Time - sustained for 5 minutes - Red(>100msec). | _D59E4017_EAD3_4ED8_B664_B00775538B2F_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | PerformanceHealth | False | False | Internal |
| Forensic: System Attendant failed to stop the server. | _D5D2B0A7_8F40_4C7E_A4B1_16A8858BA48A_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: No target bridgehead servers were found for this routing group connector in the routing tables. | _D5E5D414_F22E_4A83_8426_CC7E53E7B232_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: A configuration change was detected but the updated Receive connector configuration could not be read. The configuration change will be ignored. | _D6311E52_4CF1_4676_95FB_3D46DA78EEF3_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: The Exchange Transport service was unable to start listening on the receive connector binding because an error was encountered. | _D63426C3_9C0D_45e7_A31C_81345B7A8748_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: The Outlook Web App proxy failed because no Outlook Web App virtual directory configured for Kerberos authentication could be found in the site. | _D652EF77_22DC_4444_8479_82DD7CCF02AF_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: The connection to the Send connector was disconnected by the remote server. | _D66BC916_3BF1_4ED9_BF40_45A1B9825F23_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: An accepted domain entry contains invalid data. As a result the associated record will be skipped. | _D68F3A5B_2AFC_41BD_AD82_FADB7C9CBBF8_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: A transient configuration error was detected while the routing configuration was being loaded. | _D6A2A789_24B4_4E53_A412_96D85E8D403D_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: The Exchange store can't create any more MAPI-named properties. | _d6bb1e22_e151_4993_b5f5_7328604e3741_ | Microsoft.Exchange.2010.Mailbox.MailboxOnDbCopy | AvailabilityHealth | True | False | Internal |
| Forensic: An error was detected on a hard drive during a paging operation. | _D7B6A24A_18BC_45c9_A479_02C8BEA0AAAE_ | Microsoft.Exchange.2010.CommonServer | AvailabilityHealth | True | False | Internal |
| Forensic: A Web request failed security checks. | _D8AF17F3_A989_4ABD_89C2_DB1CA16CAA59_ | Microsoft.Exchange.2010.ClientAccessInformationWorker | AvailabilityHealth | True | False | Internal |
| KHI: RPC could not start. | _D93C0D26_DC93_4517_844B_E8DA7AC69066_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| KHI: Outlook Web App failed to initialize. A file from a theme folder couldn't be parsed. Review MSExchangeOWA event 20 for the cause. | _D94A0FA6_4C27_4D41_9399_4E5609116F47_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| KHI: The non-nullable column in the Extensible Storage Engine (ESE) can't be found in the actual database table. | _D94A863B_E682_47FD_BCFC_FA5FEFE1A0CC_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: Outlook Web App wasn't able to proxy traffic because the authentication for the connection between the two Client Access servers failed. | _D9D72443_644A_4DD2_9571_015E51E2C9E8_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| KHI: A POP3 connectivity transaction failure occurred. The specified server isn't a Client Access server. | _D9D73EBD_1B56_410a_B1FF_695CB6AF1BB2_ | Microsoft.Exchange.2010.ClientAccessPop3 | AvailabilityHealth | True | False | Internal |
| Forensic: OABGen received an error while trying to delete one of the offline address book files from the distribution point. | _D9FC4AA3_09EA_478A_8E33_CBBE567A8D29_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: An error occurred while the Test-ECPConnectivity (External) cmdlet was running. | _DA1F123E_5452_4AFC_9758_E89DFB04A255_ | Microsoft.Exchange.2010.ClientAccessTestConfig | AvailabilityHealth | True | False | Internal |
| Forensic: The Microsoft Exchange Transport Log Search Service could not be stopped. | _DA669FC5_801C_4A6E_AE5A_264DAE189F2D_ | Microsoft.Exchange.2010.CommonTransportLogSearch | AvailabilityHealth | True | False | Internal |
| Forensic: The Exchange transport Store Driver component encountered a poison message during message submission. The submission will be cancelled. | _DAA00B44_E7D1_4F71_B5EB_A5E38453F50B_ | Microsoft.Exchange.2010.HubTransportStoreDriver | AvailabilityHealth | True | False | Internal |
| KHI: The internal TLS certificate for this server is missing. | _DAD4CB4D_33CF_4B6D_97F3_DD02FC02C22B_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: An error occured while processing a meeting message. | _DAE8F49A_A655_4762_B144_F5327061F873_ | Microsoft.Exchange.2010.HubTransportStoreDriver | AvailabilityHealth | True | False | Internal |
| Forensic: Unable to load the performance counters for the MSExchange Store Driver Performance object. | _DB2EDBB0_A358_4080_BE6D_1C18DA09CA2F_ | Microsoft.Exchange.2010.HubTransportStoreDriver | AvailabilityHealth | True | False | Internal |
| KHI: The Exchange store has consumed 90\% of available RPC threads. | _db4ee2d6_db22_496a_9146_c7a9444efcb1_ | Microsoft.Exchange.2010.Mailbox.InformationStorePerformance | PerformanceHealth | True | False | Internal |
| KHI: Could not read the forest GUID. The Proxy address calculation services will not be available on the local Exchange server. | _DBAF248E_2EC9_4DE5_806D_28994B58B463_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: The e-mail address description object in the Microsoft Exchange directory is missing. | _DC0B8279_5D98_45B1_B11B_5733B54BAAFB_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: Submission Queue Length - sustained for 5 minutes - Red(>250) - Edge Transport. | _DC13A005_E972_41F3_943C_523356F917B6_ | Microsoft.Exchange.2010.EdgeTransportQueues | PerformanceHealth | True | False | Internal |
| Forensic: The connection to a secure domain on a Send connector failed because Transport Layer Security (TLS) negotiation failed. | _DC78F809_2071_4749_83B6_C956AA72972A_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: Could not read the root entry in Active Directory. | _DD00B86F_9F9E_4908_850D_9B85F46340DB_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: System Attendant is unable to generate an e-mail address of particular type. | _DD171A22_F9DF_4304_9828_CCFC2614961E_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: Protocol Analysis: No DNS entries were found for this server's authoritative domains. Open proxy detection is not available. | _DD2E34EA_F0F4_4AA1_892F_8D61E28C03A0_ | Microsoft.Exchange.2010.CommonTransportAgents | AvailabilityHealth | True | False | Internal |
| KHI: Exchange failed to retrieve the local server. It's possible that the DNS name of the server has changed. | _DD510CA1_1F41_4CD0_B4B4_0DE018B6D276_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| KHI: The database copy is low on database volume space. The volume has reached error levels (16\% free). | _dd77cb38_b8ac_43e7_823f_98b5bdbe08bf_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyEdbLogicalDiskSpace | PerformanceHealth | True | False | Internal |
| KHI: The Microsoft Exchange Transport Log Search Service failed to start due to an ACL setup error. | _DD81E7B7_D948_411A_B86B_1769D961577A_ | Microsoft.Exchange.2010.CommonTransportLogSearch | AvailabilityHealth | True | False | Internal |
| KHI: The Microsoft Exchange Transport Log Search service failed because MessageTrackingLogPath was set to an invalid value. | _DDD56B9F_BAA2_4595_AC8D_6CE657AF8571_ | Microsoft.Exchange.2010.CommonTransportLogSearch | AvailabilityHealth | True | False | Internal |
| Forensic: Exchange was unable to load the Active Directory recipient cache performance counters. | _DE5AB2A8_6E88_4B88_8CAB_21A6C2C7AEFC_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: OABGen encountered an error while calculating offline address lists. Offline address books will not be available for client download. | _DEAB0791_B39D_4F69_86BD_62AB9BCEE7AE_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: Corruption that can be corrected via a reseed exists in a local database copy; it may terminate replication or dismount. | _ded93f77_9f9e_4556_a724_d7f9abd4319a_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption | AvailabilityHealth | True | False | Internal |
| KHI: Authentication of the connection to a secure domain failed because the TLS server certificate didn't contain the name of that domain. | _DEE64475_0E74_4215_9BFA_6271FF19F5E4_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: A service request to the Media Relay Authentication server has failed. | _dee7ed67_3f2f_4dde_87c7_099499a65236_ | Microsoft.Exchange.2010.UnifiedMessaging.Telephony.Inbound | AvailabilityHealth | True | False | Internal |
| Forensic: The proxy request to a Client Access server has timed out. The server specified in the event description may be overloaded. | _DEFA897E_942B_4218_8137_2E03EA419C9A_ | Microsoft.Exchange.2010.ClientAccessActiveSync | AvailabilityHealth | True | False | Internal |
| KHI: Availability Service initialization failed. | _DF0FB30A_62D2_4E7A_B35C_5BF987134471_ | Microsoft.Exchange.2010.ClientAccessInformationWorker | AvailabilityHealth | True | False | Internal |
| Forensic: Couldn't create the shared memory heap. This could result from internal Epoxy (ExIPC) failures or the system may be running out of memory. | _DF853503_39F9_4CA7_B8A2_D980120615EE_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| KHI: The server can't achieveTransport Layer Security which the Receive connector requires for the MailFrom command to be run, | _E055B0D0_C283_41EA_AA85_E1CFA456C216_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: Error occurred while executing the Test-ExchangeSearch diagnostic cmdlet. | _E068F4D7_9557_4B98_8D72_B8E78327561E_ | Microsoft.Exchange.2010.MailboxTestConfig | AvailabilityHealth | False | False | Internal |
| KHI: There wasn't enough disk space to complete the database operation. The Microsoft Exchange Transport service is shutting down. | _E0A971E0_69B1_4B5E_AA0C_B9297A4E8C3A_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: Delay DSNs - increase over 60 minutes - Yellow(>10) - Edge Transport. | _E109C7BB_79DC_4E15_978B_C6F70B6082C3_ | Microsoft.Exchange.2010.EdgeTransportDsn | PerformanceHealth | True | False | Internal |
| Forensic: Delivery Failure Resolver 5.2.4 happened over last 5 minutes - Yellow(>1). | _E180DC4B_F579_4df1_83EE_D9717E062A05_ | Microsoft.Exchange.2010.CommonTransport | PerformanceHealth | True | False | Internal |
| Forensic: The Exchange Active Directory Provider couldn't bind to Active Directory. | _E1DACB09_F28C_4CF9_84F6_93547B1692EC_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| Forensic: The Content Filter wrapper process couldn't be restarted in a timely manner. Restarting the Microsoft Exchange Transport Service may solve the problem. | _E2759770_9F72_4AA2_A7B7_605783A89C52_ | Microsoft.Exchange.2010.CommonTransportAgents | AvailabilityHealth | True | False | Internal |
| Forensic: The provider that was requested for the Autodiscover service could not be loaded. | _E27923E8_7431_4EC5_B11F_228990A875CA_ | Microsoft.Exchange.2010.ClientAccessAutoDiscovery | AvailabilityHealth | True | False | Internal |
| Forensic: Exchange store: Public Folder Database: Receive Queue Size - sustained for 15 minutes - Yellow (>25). | _e2d3ba47_2bb5_412f_ac7f_f1cbb7609fba_ | Microsoft.Exchange.2010.Mailbox.PublicFolderDatabase | PerformanceHealth | True | False | Internal |
| Forensic: The Exchange Active Directory Provider failed to obtain DNS records for the specified domain or forest. | _E30D7CF3_9ABA_43DA_B577_593EB48CF499_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| KHI: An EdgeSync process ended because the Hub Transport server couldn't find a matching direct trust certificate on the Edge Transport server. | _E3299B7D_F9E6_4A82_B425_6CA019D6A06E_ | Microsoft.Exchange.2010.HubTransportEdgeSync | AvailabilityHealth | True | False | Internal |
| KHI: The IIS Admin Service (IISAdmin) isn't running. | _e38e2187_c32f_430d_bc4b_409c69447603_ | Microsoft.Exchange.2010.CommonInternalRoleServices | AvailabilityHealth | True | False | Internal |
| Forensic: The Exchange Search Indexer failed to retreive the local server object from Active Directory. It will be retried. | _e3c6edac_a01d_423f_914d_611dae975709_ | Microsoft.Exchange.2010.Mailbox.ContentIndexingService | AvailabilityHealth | True | False | Internal |
| Forensic: No DNS servers could be retrieved via the network adapter. Use the Get-NetworkConnectionInfo cmdlet to check your network connectivity . | _E48576B7_0A03_4A97_839E_446948E24443_ | Microsoft.Exchange.2010.CommonAllServerRoles | AvailabilityHealth | True | False | Internal |
| KHI: High percentage of Transport Throttling Service Client requests are failing - sustained for 30 minutes - Red(>10) | _E4DA6733_A889_42b3_B5C0_A8B50A949836_ | Microsoft.Exchange.2010.CommonTransportThrottlingClient | PerformanceHealth | False | False | Internal |
| KHI: Hard I/O error will dismount or terminate replication on a database copy. | _e549edda_29f5_4d5e_b2f1_d0438f754577_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption | AvailabilityHealth | True | False | Internal |
| Forensic: Outlook Web App failed to read the message classification settings from Active Directory for one of its virtual directories. | _E5842AC5_0DB5_4F25_B615_19252CF64732_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| KHI: Microsoft Exchange couldn't read the server configuration. The Microsoft Exchange Credential service will be stopped. | _E586AF17_1F24_4D1C_9060_71FDCFDD31CC_ | Microsoft.Exchange.2010.EdgeTransportMessageSecurity | AvailabilityHealth | True | False | Internal |
| KHI: A secure connection to a domain secure domain could not be established because the validation of the TLS server certificate failed. | _E5F99D06_8915_4544_96BE_D30BD9C5312D_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: The Exchange information store: RPC Averaged Latency - sustained for 5 minutes - Red (>70 msec). | _e615a354_1df7_4d34_87bd_0f6706aad86f_ | Microsoft.Exchange.2010.Mailbox.InformationStorePerformance | PerformanceHealth | True | False | Internal |
| KHI: Microsoft Exchange couldn't read the server configuration because the directory is unavailable. | _E665941A_961D_4825_AF6B_7DC3D2A37F47_ | Microsoft.Exchange.2010.EdgeTransportMessageSecurity | AvailabilityHealth | True | False | Internal |
| Forensic: OABGen couldn't open the directory specified in the registry as the OAB V4 publishing point. | _E680736D_9217_4CE9_9725_8E577A61DB09_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: The Exchange information store: RPC Averaged Latency - sustained for 5 minutes - Yellow (>50 msec). | _e6cd2d86_0b00_4aa4_91ae_170a1a70fa76_ | Microsoft.Exchange.2010.Mailbox.InformationStorePerformance | PerformanceHealth | True | False | Internal |
| NonServiceImpacting: The STARTTLS certificate will expire soon. The certificate must be renewed to preserve mail flow. | _E6D4C7DC_6BA9_4D33_9FAB_3F37E88A987D_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: EdgeSync MSERV synchronization isn't configured. | _e6e19525_336f_4ea0_8a97_7b9d58085b42_ | Microsoft.Exchange.2010.HubTransportEdgeSync | AvailabilityHealth | False | False | Internal |
| Forensic: An Exchange 2003 server was found in the Exchange 2010 Routing Group in the routing tables. | _E74793F5_5376_4165_A193_7DB648E02057_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: A request to access a public folder failed. | _E7A37FE2_3208_4A15_B17F_4C93D2B8EE01_ | Microsoft.Exchange.2010.ClientAccessInformationWorker | AvailabilityHealth | True | False | Internal |
| NonServiceImpacting: File Distribution Service: Failed to read the security descriptor from Active Directory for the offline address book. | _E83261DC_B7CD_4D33_A31D_999C8DF6C5F4_ | Microsoft.Exchange.2010.CommonFileDistributionService | AvailabilityHealth | True | False | Internal |
| Forensic: The message could not be received from a domain-secured domain because of a configuration error on a Receive connector. | _E872B2B2_A9F0_47D2_B235_269959490DDC_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: The Exchange authentication certificate must be updated. Run the Enable-ExchangeCertificate command on this server to update it. | _E8DD5266_D5E6_4ED1_A890_AFF268D644E4_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: Protocol Analysis: DNS is not configured. Most likely, the reason for this is that no DNS servers were found. Sender Reputation calculations are disabled. | _E9103850_5DE0_4282_9086_2A505C920487_ | Microsoft.Exchange.2010.CommonTransportAgents | AvailabilityHealth | True | False | Internal |
| KHI: The process to start transport agents failed. The transport service will be stopped. | _EAF0B308_03BF_497C_A004_B36C14F2DE5D_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: Database copy encountered a serious I/O error (lost flush) that may have affected all copies of the database. | _EB0EF917_E93D_42a0_81A5_80E5A778353E_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption | AvailabilityHealth | True | False | Internal |
| Forensic: Transport latency impacted - Service Restart for 99th percentile of messages not meeting SLA over last 15 minutes - Yellow(>10). | _EB4A465D_1178_40bc_8A57_A7362E961555_ | Microsoft.Exchange.2010.CommonTransport | PerformanceHealth | True | False | Internal |
| Forensic: The Proxy Web request to a remote Active Directory forest couldn't be issued because of invalid or missing credentials. | _EB6E56FF_A03D_442F_A218_E06B9238BF4D_ | Microsoft.Exchange.2010.ClientAccessInformationWorker | AvailabilityHealth | True | False | Internal |
| NonServiceImpacting: Your Autodiscover service configuration isn't secure. To fix this problem, disable anonymous access on the Autodiscover virtual directory. | _EC2E1639_05E5_4DE3_9ECB_A6D2288956B4_ | Microsoft.Exchange.2010.ClientAccessAutoDiscovery | AvailabilityHealth | True | False | Internal |
| Forensic: The Prelicensing agent didn't retrieve a license because the RMS template wasn't found on the AD RMS server. Contact the AD RMS administrator. | _EC5D4592_27CA_4564_B137_3C529EE6E91C_ | Microsoft.Exchange.2010.HubTransportAgentsMessagingPolicies | AvailabilityHealth | True | False | Internal |
| Forensic: Disk Free Megabytes low - Yellow(<40MB). | _EC781FC8_878C_4C96_90FC_402F0E404D5D_ | Microsoft.Exchange.2010.CommonServer | PerformanceHealth | False | False | Internal |
| KHI: The TLS certificate used for SMTP authentication by Exchange couldn't be read from Active Directory. | _EC97C8B4_BD35_4E96_8161_1DCA85426019_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: The maximum number of allowed processes are using DSAccess. No additional processes can use the API. Restart the Active Directory Topology service. | _ECA5862F_5C42_4676_A797_582A94C749E3_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| KHI: Exchange Control Panel connectivity (External) transaction failure - Client Access server configuration check failure. | _ED498CBF_EA09_43B5_A937_6BD4A3D694DE_ | Microsoft.Exchange.2010.ClientAccessExchangeControlPanel | AvailabilityHealth | True | False | Internal |
| Forensic: Exchange Control Panel detected an unhandled exception during a web service request. Review MSExchange Control Panel event 5 for the cause. | _ED4B0762_746A_4ca8_80CF_BC6B673F1C18_ | Microsoft.Exchange.2010.ClientAccessExchangeControlPanel | AvailabilityHealth | True | False | Internal |
| Forensic: Couldn't load the IP reputation data file. | _ED514F00_3C9C_4E26_95DA_BC9214C43066_ | Microsoft.Exchange.2010.CommonTransportAgents | AvailabilityHealth | True | False | Internal |
| Forensic: The account provided valid credentials; however, it does not have submit permissions on the SMTP Receive connector, so the authentication has failed. | _ED5F9E5A_A4DA_4CF2_85DF_DD1D6BFDE330_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: The Exchange Active Directory Provider couldn't contact a domain controller in the domain, but it could resolve the name. | _EDBF6305_4712_4514_82E2_46AEF327DE96_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| KHI: An E-mail Address Policy has an invalid Filter Rule (purportedSearch). New users, contacts and groups will not receive email. | _EDF99431_A386_4CCD_9EFC_C79D8975B101_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: The Outlook Web App proxy failed because of a version mismatch between the source and destination servers. | _EE1390F5_BEE4_438F_A768_D6252E07B4EA_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: A message from a domain-secured domain could not be authenticated because the server did not use Transport Layer Security (TLS). | _EE6253F6_FEDE_44E6_BCE7_F75ED0FBE003_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: Delay DSNs - increase over 60 minutes - Yellow(>10) - Hub Transport. | _EE7D1033_F0C7_442B_9EDE_B0C3FD99CB57_ | Microsoft.Exchange.2010.HubTransportDsn | PerformanceHealth | True | False | Internal |
| KHI: The Microsoft Exchange ADAM service (ADAM_MSExchange) isn't running. | _eed681c4_631d_44cc_80a8_b3091c9d681e_ | Microsoft.Exchange.2010.EdgeTransportServiceMonitoring | AvailabilityHealth | True | False | Internal |
| KHI: The database copy is not mounted on the local server. Another database copy may be mounted on a different server. | _ef4a8515_1cc0_48a9_aa12_92ba059a6eae_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyMounted | PerformanceHealth | True | False | Internal |
| KHI: Retry Mailbox Delivery Queue Length - sustained for 30 minutes - Red(>1) - Hub Transport. | _EF51D339_22C5_49b3_8B6B_25002BE31D4A_ | Microsoft.Exchange.2010.HubTransportQueues | PerformanceHealth | True | False | Internal |
| Forensic: A Client Access server couldn't be found to handle the request. | _EF847EBB_4E8B_4AF2_83DF_57CF667B4D1F_ | Microsoft.Exchange.2010.ClientAccessInformationWorker | AvailabilityHealth | True | False | Internal |
| KHI: Couldn't run the Test-EdgeSyncMserv diagnostic cmdlet. | _ef9f008b_9bb9_4908_b306_47840c754b54_ | Microsoft.Exchange.2010.HubTransportEdgeSync | AvailabilityHealth | False | False | Internal |
| KHI: An Address List has an invalid Filter Rule (purportedSearch). | _EFE169D2_A97A_4FA9_B99A_AF2A15A4E43E_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: Submission Queue Length - sustained for 5 minutes - Yellow(>150) - Edge Transport. | _EFED2483_2313_4BC1_84F8_2349A4B07E08_ | Microsoft.Exchange.2010.EdgeTransportQueues | PerformanceHealth | True | False | Internal |
| Forensic: A new parent Legacy Exchange DN container was found during the offline address book generation. | _EFF51D65_DD7C_44A3_BFD0_9F0644ADC4E8_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: Failed to start the Microsoft Exchange System Attendant service; review related events for more information. | _F0089B10_32F0_405D_AC3F_7AB2CF3B6980_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: Remote PowerShell connectivity (Internal) transaction failure - Server configuration check failure. | _F05F9B1E_1FF6_4A96_B133_B882F169FBC0_ | Microsoft.Exchange.2010.CommonRemotePowerShell | AvailabilityHealth | True | False | Internal |
| KHI: Exchange Control Panel connectivity (Internal) transaction failures. | _F0A79980_0D69_4A9B_8B14_3D07A5F0827F_ | Microsoft.Exchange.2010.ClientAccessExchangeControlPanel | AvailabilityHealth | True | False | Internal |
| KHI: The AD RMS service connection point (SCP) URL doesn't exist or is invalid. Republish the SCP using the AD RMS server. | _F0BAA161_B024_4C96_B3B8_FABAE6D9E1D1_ | Microsoft.Exchange.2010.HubTransportAgentsMessagingPolicies | AvailabilityHealth | True | False | Internal |
| KHI: The Outlook Web App proxy failed because of SSL configuration issues on the destination Outlook Web App virtual directory. | _F0D0B8CE_11C4_41B2_961A_5A57AEEF62A2_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: The route to the source transport or MTA server for the specified connector couldn't be found in the routing tables. | _F10B91B3_5742_4A74_8B74_2EA8320F0476_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: Failed to remove a log file for database. Either the file is in use or the service has insufficient permissions. | _F138780F_564B_47e7_B2F7_F0C971768AA9_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopy | AvailabilityHealth | True | False | Internal |
| NonServiceImpacting: WebServices connectivity (Internal) transaction failure - The credentials cannot be used to test Web Services. | _F1796B63_2FDA_4822_A6C6_1FBA8B8134D5_ | Microsoft.Exchange.2010.ClientAccessWebServices | AvailabilityHealth | True | False | Internal |
| Forensic: File Distribution Service: Remote file not found. Current synchronization task aborted. | _F17A0A2B_B213_4736_98D0_B9B2AD8F6D04_ | Microsoft.Exchange.2010.CommonFileDistributionService | AvailabilityHealth | True | False | Internal |
| KHI: An IMAP4 connectivity transaction failure occurred. The mailbox isn't enabled for the user. | _F1C987AB_6AD5_426b_9100_88A16DBEF091_ | Microsoft.Exchange.2010.ClientAccessImap4 | AvailabilityHealth | True | False | Internal |
| KHI: Outlook Web App wasn't able to register for setting change notification for one of its virtual directories. | _F1CDCFE1_D2B9_4DBE_B4C9_144067954938_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| Forensic: Number of outstanding requests - sustained for 5 minutes - Yellow(>50). | _F2845274_EAC4_4808_80EE_82267EC93534_ | Microsoft.Exchange.2010.CommonDomainController | PerformanceHealth | True | False | Internal |
| KHI: At startup, the Microsoft Exchange Replication service couldn't enable the Tasks RPC listener. | _f293dc1d_eb1b_40cd_9363_adecc8ac82b0_ | Microsoft.Exchange.2010.Mailbox.ReplayService | AvailabilityHealth | True | False | Internal |
| Forensic: The Content Filter agent process is being restarted. | _F2E95635_8A0A_43D4_9E66_28FF5BA694A7_ | Microsoft.Exchange.2010.CommonTransportAgents | AvailabilityHealth | True | False | Internal |
| Forensic: Failed to generate an offline address book. The error is specified in the event description. | _F32F607D_A16B_474B_8390_AEA70ED7859E_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: Failed to connect to remote server. | _F32FCFF9_E2B1_4D77_BB36_D1D7C71665F2_ | Microsoft.Exchange.2010.CommonFileDistributionService | AvailabilityHealth | True | False | Internal |
| KHI: Transport Categorizer Jobs are unavailable - percentage of available categorizer jobs - Red(<90). | _F35E938A_6DC6_4ece_9A2F_200AFD1575E0_ | Microsoft.Exchange.2010.CommonTransport | PerformanceHealth | True | False | Internal |
| Forensic: System Attendant reported an error when setting directory service notification. | _F361B255_9D69_45EF_8729_997B20C805BA_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: The Microsoft Exchange Transport service doesn't have sufficient permissions to write the Pickup directory location to the registry. | _F3679E4E_4A3C_4E26_ACEF_C11103434A5F_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: Routing group configuration supported only in routing groups with Exchange 2003 servers. | _F36F43CB_BE62_4AFA_B93D_6166F0743176_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: The Exchange store encountered a stack overflow. | _f39dc3a7_a897_4d31_abdb_9cd53c88e16c_ | Microsoft.Exchange.2010.Mailbox.InformationStorePerformance | AvailabilityHealth | True | False | Internal |
| KHI: The World Wide Web Publishing Service (W3Svc) isn't running. | _f39f4de7_595f_40c1_bfb7_005f2fc2262f_ | Microsoft.Exchange.2010.CommonInternalRoleServices | AvailabilityHealth | True | False | Internal |
| KHI: The mounted database copy is experiencing a critically high log file write latency. The rate is sustained for at least 5 minutes. | _f46f2b5f_9861_4d71_97f7_b6259752e1fb_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyLogLogicalDiskPerformance | PerformanceHealth | True | False | Internal |
| NonServiceImpacting: An Exchange Control Panel connectivity (Internal) transaction failure occurred. Test-ECPConnectivity must be run on an Exchange server. | _F470EE33_2566_4AFD_9D6E_47CA384DF11A_ | Microsoft.Exchange.2010.ClientAccessExchangeControlPanel | AvailabilityHealth | True | False | Internal |
| KHI: MSExchange Assistants RPC timout to store. Assistants Infrastructure is no longer getting responses from store. | _F4733DC4_57DC_400f_B0A8_5DF9D77C9298_ | Microsoft.Exchange.2010.Mailbox.Assistants | AvailabilityHealth | True | False | Internal |
| Forensic: The Content Filter encountered an error while trying to scan the message. This message hasn't been assigned a spam confidence level (SCL) value. | _F47991A9_F886_49AB_A16B_F4EB4BA25A6A_ | Microsoft.Exchange.2010.CommonTransportAgents | AvailabilityHealth | True | False | Internal |
| KHI: Couldn't load the Exchange store because the distinguished name (DN) of the message database doesn't match the DN of directory. | _f4b40d85_3c73_438f_9175_b2b26c5d783e_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyMounted | AvailabilityHealth | True | False | Internal |
| Forensic: The SMTP connector rejected an incoming connection because the maximum number of connections for this connector has been reached. | _F4B98287_783F_431B_A3CB_FF80471306C5_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: The Microsoft Exchange IMAP4 service (MSExchangeIMAP4) isn't running. | _f4c07953_18fa_40b2_a4f9_589645708b65_ | Microsoft.Exchange.2010.ClientAccessServiceMonitoring | AvailabilityHealth | True | False | Internal |
| KHI: Exchange was unable to execute the diagnostic cmdlet to probe the POP3 connectivity state. | _F4DCDFFA_0CE7_11DB_9607_00E08161165F_ | Microsoft.Exchange.2010.ClientAccessTestConfig | AvailabilityHealth | True | False | Internal |
| KHI: Database copy isn't keeping up with the changes on the active database copy and has failed. | _F50A719B_6E5A_4bf5_B5C3_61619CF658A4_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopy | PerformanceHealth | True | False | Internal |
| KHI: The Microsoft Exchange Search Indexer service (MSExchangeSearch) is not running. | _f517984d_9ae2_4849_bb08_69d54c55acf3_ | Microsoft.Exchange.2010.Mailbox.ContentIndexingService | AvailabilityHealth | True | False | Internal |
| KHI: A folder couldn't be created to cache the current Outlook Web App process. Other processes may be using the same directory. | _F544640E_0DA2_42B4_8C3D_7C7842E9BCA7_ | Microsoft.Exchange.2010.ClientAccessOutlookWebAccess | AvailabilityHealth | True | False | Internal |
| KHI: A POP3 connectivity transaction failure occurred. The mailbox isn't enabled for the user. | _F55216AB_C56B_4e97_99CD_E9B6B048BBAF_ | Microsoft.Exchange.2010.ClientAccessPop3 | AvailabilityHealth | True | False | Internal |
| Forensic: The SMTP Receive connector rejected the specified error message because of a database issue. | _F6312D70_E65C_46EE_B34A_D8A052C349CE_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: A POP3 connectivity transaction failure occurred. The mailbox database wasn't found. | _F658E443_7DF4_43ff_9FE2_BAC22EE520F0_ | Microsoft.Exchange.2010.ClientAccessPop3 | AvailabilityHealth | True | False | Internal |
| Forensic: Name Service Provider Interface (NSPI) Proxy could not listen on a listening socket. The Winsock subsystem returned an error. | _F664F001_520F_4B47_81A0_A8E4B6B3CAFE_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: The Exchange Information Store cannot contact Active Directory. | _f670cca0_2bd4_4d1c_80b6_8deac578dfa0_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| Forensic: A column in the Extensible Storage Engine (ESE) contains an incorrect data type. | _F6B6DE7D_142E_49E7_99B0_84B3415E6B14_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: Can't open or rename file in the Pickup directory. As a result, some mail may not be processed by Pickup. For more information, review the event description. | _F71A38DC_5DD9_4E35_86F6_8734663ECE12_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: The SmtpReceive process failed to start listening on a configured binding because IPv6 is not enabled. | _F7D79410_7010_41BE_BDDF_03EC9256EB0B_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: Active Mailbox Delivery Queue Length - sustained for 5 minutes - Yellow(>200) - Hub Transport. | _F800605A_1613_4EC1_980D_342395E4B4B9_ | Microsoft.Exchange.2010.HubTransportQueues | PerformanceHealth | True | False | Internal |
| Forensic: The MSExchangeAL service start is slow due to network issues. The service will retry until successful. | _F814A43C_553E_4D5A_A77D_08A69E63C648_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: Unable to generate the e-mail address; unable to load address module for this address type. | _F87D9C72_3C0A_48C5_AFCD_85D9E7373ED4_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: Unexpected Extensible Storage Engine (ESE) error encounterd by Microsoft Exchange Replication service. | _F92E5CFA_7C6A_4dc5_9C0D_A8312BD394B6_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopy | AvailabilityHealth | True | False | Internal |
| KHI: UM connectivity (Local Voice) transaction failure. | _F953F28C_F63E_4539_A4B5_02072902A8DF_ | Microsoft.Exchange.2010.UnifiedMessaging.Availability.Service | AvailabilityHealth | True | False | Internal |
| Forensic: MSExchangeFDS:OAB: Download Tasks Queued - sustained for 10 hours - Yellow (>5). | _F9980BEC_F540_48CA_8B4A_DDA9DE4CF21C_ | Microsoft.Exchange.2010.ClientAccessFileDistributionService | PerformanceHealth | True | False | Internal |
| KHI: An Outlook Web App connectivity (External) transaction failure occurred. The test credentials can't be used to test Outlook Web App. | _FA178B04_F2C2_4B17_8CEA_505F3EF195D3_ | Microsoft.Exchange.2010.ClientAccessTestConfig | AvailabilityHealth | True | False | Internal |
| Forensic: Spam quarantine message generation may fail because there was an error reading the quarantine mailbox configuration from the directory. | _FA9231CF_C89C_4B09_91C6_88C1A3CDF215_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| Forensic: Percent of Active Hub Servers over last 10 minutes - Yellow(<50) - Edge Server. | _FAA26241_35B9_4c2c_A699_2154D04D2A46_ | Microsoft.Exchange.2010.Mailbox.MailSubmission | PerformanceHealth | True | False | Internal |
| Forensic: A configuration object in Active Directory isn't valid so an exception occurred. | _FAB9D2BA_3CC7_4456_8163_359F090BACB4_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| KHI: The Microsoft Exchange Protected Service Host service (MSExchangeProtectedServiceHost) isn't running. | _fac565f5_0c85_4f8a_b616_703de922c630_ | Microsoft.Exchange.2010.ClientAccessServiceMonitoring | AvailabilityHealth | True | False | Internal |
| Forensic: The Preload Filter for the DN could not be parsed. This filter will not be used. | _FB5668CF_C83B_47EB_A731_D51C8ACF4243_ | Microsoft.Exchange.2010.CommonActiveDirectoryAccess | AvailabilityHealth | True | False | Internal |
| KHI: Exceeded the supported mount limit of local database copies. | _FBA001F6_0AD9_4856_AC48_415FCC8EB725_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopy | AvailabilityHealth | True | False | Internal |
| Forensic: File Distribution Service: Unhandled exception occurred in worker thread. Current synchronization task is aborted. | _FBC8126C_AF83_4FB6_983F_BFD6A2852E48_ | Microsoft.Exchange.2010.CommonFileDistributionService | AvailabilityHealth | True | False | Internal |
| Forensic: Name Service Provider Interface (NSPI) Proxy failed to connect to the global catalog. | _FBD030F5_15B3_4E71_88DE_7E73963F0DD0_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: The download of the Microsoft Exchange Anti-Spam Update failed with an error. | _FC13B263_138B_4E48_A1C1_1BB61017FB19_ | Microsoft.Exchange.2010.CommonTransportAgents | AvailabilityHealth | True | False | Internal |
| Forensic: System Attendant reported an error in its Directory Service (DS) Monitoring thread. | _FC4B398A_5C77_43C5_A94F_3F30FE9ACD47_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| KHI: The Mserv lookup resulted in the same partner ID as the current site. It's possible that a provisioning error occurred. | _FE0B82BA_A133_43ef_8C47_E7A09CBAB427_ | Microsoft.Exchange.2010.UnifiedMessaging.Telephony.Inbound | AvailabilityHealth | True | False | Internal |
| Forensic: The transport process could not load poison message information from the registry. Access to the registry failed with the specified error. | _FE67AD60_FC99_4E52_AF4F_7E8847845942_ | Microsoft.Exchange.2010.CommonTransport | AvailabilityHealth | True | False | Internal |
| KHI: UM Connectivity (Local Voice) transaction failure - Active Directory error encountered. | _FE891CAD_6EE7_4E7C_A862_FFF08403AAD9_ | Microsoft.Exchange.2010.UnifiedMessaging.Availability.Service | AvailabilityHealth | True | False | Internal |
| KHI: POP3 connectivity couldn't be tested. | _FED191CC_0CE7_11DB_9607_00E08161165F_ | Microsoft.Exchange.2010.ClientAccessTestConfig | AvailabilityHealth | True | False | Internal |
| Forensic: OABGen supports only alphanumeric and space characters for the offline address name. This OAB will not be generated. | _FEFD8C31_AB54_401F_8A55_44695D03A30F_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |
| Forensic: A transport rules agent caused an unhandled exception. | _FF01B4ED_E75A_4E19_9862_0AF62019B0D0_ | Microsoft.Exchange.2010.CommonTransportAgents | AvailabilityHealth | True | False | Internal |
| KHI: Apparent configuration problem on a database copy or a file/directory is missing due to a storage failure. | _ff27c57f_187b_4a0d_adba_3588b2fbb311_ | Microsoft.Exchange.2010.Mailbox.DatabaseCopyCorruption | AvailabilityHealth | True | False | Internal |
| KHI: Remote PowerShell connectivity (Internal) failures. | _FF62662A_9F83_43E9_A684_D386526AFBB6_ | Microsoft.Exchange.2010.CommonRemotePowerShell | AvailabilityHealth | True | False | Internal |
| Forensic: An attempt was made to use the Cluster Remote Procedure Call (RPC) interface without proper permissions. | _FF7B3495_2AAA_447F_AE79_99F8CCA8AC4E_ | Microsoft.Exchange.2010.MailboxSystemAttendant | AvailabilityHealth | True | False | Internal |