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The Terminal Services license server cannot communicate with another Terminal Services license server

Microsoft.Windows.Server.2008.TerminalServicesRole.Service.TSLicensing.EventCollection.8.45 (Rule)

Knowledge Base article:

Resolutions

To resolve this issue, check firewall settings to ensure that remote procedure call (RPC) communication is not blocked between the Terminal Services license server and other license servers. If the firewall settings are correctly configured or the problem persists, identify and fix network connectivity issues.

Note:  License servers maintain information about the location of other accessible license servers, and if those license servers have Terminal Services client access licenses (TS CALs). In certain cases, license servers will notify each other when TS CALs are added to their databases, or when they have no remaining TS CALs to issue. To notify each other, there must be network connectivity between the license servers.

To perform these tasks, refer to the following sections.

Check firewall settings

To perform this procedure, you must have membership in the local Administrators group, or you must have been delegated the appropriate authority.

To check firewall settings:

Note:  To view more detailed information about Windows Firewall settings, use the Windows Firewall with Advanced Security snap-in.

Identify and fix network connectivity issues

To identify and fix any network connectivity problems between the license server and other license servers, do the following:

To perform these tasks, refer to the following sections.

Note:  The following procedures include steps for using the ping command to perform troubleshooting. Therefore, before performing these steps, check whether the firewall or Internet Protocol security (IPsec) settings on your network allow Internet Control Message Protocol (ICMP) traffic. ICMP is the TCP/IP protocol that is used by the ping command.

To perform these procedures, you must have membership in the local Administrators group, or you must have been delegated the appropriate authority.

Determine if there is a network connectivity problem

To determine if there is a network connectivity problem between the license server and the other license servers:

If you can successfully ping another license server by IP address, but not by FQDN, this indicates a possible issue with DNS host name resolution.

If you cannot successfully ping another license server by IP address, this indicates a possible issue with network connectivity, firewall configuration, or IPsec configuration.

Perform additional troubleshooting steps

The following are some additional troubleshooting steps that you can perform to help identify the root cause of the problem:

Element properties:

TargetMicrosoft.Windows.Server.2008.TerminalServicesRole.Service.TSLicensing
CategoryEventCollection
EnabledTrue
Event SourceMicrosoft-Windows-TerminalServices-Licensing
Alert GenerateTrue
Alert SeverityError
Alert PriorityNormal
RemotableTrue
Alert Message
The Terminal Services license server cannot communicate with another Terminal Services license server
{0}
Event LogSystem

Member Modules:

ID Module Type TypeId RunAs 
DS DataSource Microsoft.Windows.EventProvider Default
Alert WriteAction System.Health.GenerateAlert Default

Source Code:

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