Conferencing Announcement Service could not negotiate TLS and failed to establish a SIP connection.
This issue may occur due to TLS certificates on the Microsoft Lync Server 2013 Front End and the Conferencing Announcement Service being expired, or not in sync.
Check and resolve certificate issues, mismatches between the Microsoft Lync Server 2013 Front End and Conferencing Announcement Service to restore connectivity.
Target | Microsoft.LS.2013.Component.CAS | ||
Parent Monitor | System.Health.AvailabilityState | ||
Category | AvailabilityHealth | ||
Enabled | True | ||
Alert Generate | True | ||
Alert Severity | Error | ||
Alert Priority | Normal | ||
Alert Auto Resolve | True | ||
Monitor Type | Microsoft.LS.2013.MonitorType.PairedEvent.Simple | ||
Remotable | True | ||
Accessibility | Public | ||
Alert Message |
| ||
RunAs | Default |
<UnitMonitor ID="Microsoft.LS.2013.Monitoring.UnitMonitor.PairedEvent.CAS.CAS_E_TLS_FAILURE_ALARM" Accessibility="Public" Enabled="true" Target="Microsoft.LS.2013.Component.CAS" ParentMonitorID="Health!System.Health.AvailabilityState" Remotable="true" Priority="Normal" TypeID="Microsoft.LS.2013.MonitorType.PairedEvent.Simple" ConfirmDelivery="true">
<Category>AvailabilityHealth</Category>
<AlertSettings AlertMessage="Alert_Conferencing_Announcement_Service_could_not_negotiate_TLS_and_failed_to_establish_a_SIP_connection.">
<AlertOnState>Error</AlertOnState>
<AutoResolve>true</AutoResolve>
<AlertPriority>Normal</AlertPriority>
<AlertSeverity>Error</AlertSeverity>
<AlertParameters>
<AlertParameter1>$Data/Context/EventDescription$</AlertParameter1>
</AlertParameters>
</AlertSettings>
<OperationalStates>
<OperationalState ID="Microsoft.LS.2013.Monitoring.UnitMonitor.PairedEvent.CAS.CAS_E_TLS_FAILURE_ALARM.Success" MonitorTypeStateID="SuccessEventRaised" HealthState="Success"/>
<OperationalState ID="Microsoft.LS.2013.Monitoring.UnitMonitor.PairedEvent.CAS.CAS_E_TLS_FAILURE_ALARM.Error" MonitorTypeStateID="ErrorEventRaised" HealthState="Error"/>
</OperationalStates>
<Configuration>
<ComputerName>$Target/Host/Host/Host/Property[Type="Windows!Microsoft.Windows.Computer"]/NetworkName$</ComputerName>
<LogName>Lync Server</LogName>
<SuccessExpression>
<Or>
<Expression>
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<ValueExpression>
<XPathQuery Type="UnsignedInteger">EventDisplayNumber</XPathQuery>
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</ValueExpression>
</SimpleExpression>
</Expression>
<Expression>
<SimpleExpression>
<ValueExpression>
<XPathQuery Type="String">PublisherName</XPathQuery>
</ValueExpression>
<Operator>Equal</Operator>
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<Value Type="String">LS Conferencing Announcement Service</Value>
</ValueExpression>
</SimpleExpression>
</Expression>
</And>
</Expression>
<Expression>
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<Expression>
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</ValueExpression>
</SimpleExpression>
</Expression>
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<ValueExpression>
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</ValueExpression>
</SimpleExpression>
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<Expression>
<SimpleExpression>
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<XPathQuery Type="String">PublisherName</XPathQuery>
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<ValueExpression>
<Value Type="String">LS Conferencing Announcement Service</Value>
</ValueExpression>
</SimpleExpression>
</Expression>
</And>
</ErrorExpression>
</Configuration>
</UnitMonitor>