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Terminal Services Client Access License (TS CAL) Availability

Updated: January 5, 2012

Applies To: Windows Server 2008

When a client—either a user or a device—connects to a terminal server, the terminal server determines if a Terminal Services client access license (TS CAL) is needed. The terminal server then requests a TS CAL from a Terminal Services license server on behalf of the client attempting to connect to the terminal server. If an appropriate TS CAL is available from a license server, the TS CAL is issued to the client, and the client will be able to connect to the terminal server.

TS CALs are installed onto a license server by using the TS Licensing Manager tool.

Note:  A terminal server running Windows Server 2008 can only communicate with a license server running Windows Server 2008.

Events

Event ID Source Message

7

Microsoft-Windows-TerminalServices-Licensing

This Terminal Services license server is too busy to notify other Terminal Services license servers about the number of Terminal Services client access licenses (TS CALs) that it has in its database. It will attempt to notify other Terminal Services license servers later. If the problem persists, free up available memory if memory is low on the Terminal Services license server, and identify and resolve any issues with network connectivity, specifically with firewall configuration. Problems with remote procedure calls (RPCs) might also cause this issue.

8

Microsoft-Windows-TerminalServices-Licensing

This Terminal Services license server cannot communicate with other Terminal Services license servers about the number of Terminal Services client access licenses (TS CALs) that it has in its database. The license server will attempt to communicate with other Terminal Services license servers later.

12

Microsoft-Windows-TerminalServices-Licensing

All requests for Terminal Services client access licenses (TS CALs) will be denied due to an initialization error in policy module "%1!s!".

14

Microsoft-Windows-TerminalServices-Licensing

The Terminal Services license server cannot detect locally installed Terminal Services client access licenses (TS CALs) or communicate with other Terminal Services license servers. To resolve this issue, identify and resolve any network connectivity issues. If the problem persists, restore the licensing database from backups or contact the Microsoft Clearinghouse.
The following error occurred: %1!s!

15

Microsoft-Windows-TerminalServices-Licensing

This Terminal Services license server could not notify other Terminal Services license servers that new Terminal Services client access licenses (TS CALs) have been installed and added to its licensing database. If the problem persists, free up available memory if memory is low on the Terminal Services license server, and identify and resolve any network connectivity issues, specifically with firewall configuration. Problems with remote procedure calls (RPCs) might also cause this issue.

16

Microsoft-Windows-TerminalServices-Licensing

The Terminal Services license server could not return an expired Terminal Services client access license (TS CAL) to the available pool of TS CALs because of following error: %1!s!.

20

Microsoft-Windows-TerminalServices-Licensing

The Terminal Services license server "%1" does not have a sufficient number of permanent Terminal Services client access licenses (TS CALs) for product "%3". Only %2 permanent TS CALs remain. To resolve this problem, purchase and install additional TS CALs as needed for this license server.

21

Microsoft-Windows-TerminalServices-Licensing

The Terminal Services license server "%1" does not have any remaining permanent Terminal Services client access licenses (TS CALs) of the type "%2". As a result, the Terminal Services license server cannot issue TS CALs of the type "%2" to the terminal server "%3". To resolve this problem, verify that the Terminal Services licensing mode configured on the terminal server matches the type of TS CALs installed on the Terminal Services license server. If required, purchase and install additional TS CALs as needed for this Terminal Services license server.

22

Microsoft-Windows-TerminalServices-Licensing

The Terminal Services license server "%1" does not have any Terminal Services client access licenses (TS CALs) installed and registered with the Microsoft Clearinghouse for product "%2". Therefore, the Terminal Services license server cannot issue TS CALs of the type "%2" to the terminal server "%3". To resolve this problem, install additional TS CALs as required.

26

Microsoft-Windows-TerminalServices-Licensing

All available "%1!s!" Terminal Services client access licenses (TS CALs) for product "%2!s!" on Terminal Services license server "%3!s!" have been removed. Use TS Licensing Manager to re-register the TS CALs.

38

Microsoft-Windows-TerminalServices-Licensing

The Terminal Services license server cannot issue a Terminal Services client access license (TS CAL) to the client because of following error: %1!s!

45

Microsoft-Windows-TerminalServices-Licensing

The Terminal Services license server cannot communicate with another Terminal Services license server because of the following error: %1!s!.

56

Microsoft-Windows-TerminalServices-Licensing

Key-pack decryption failed with Win32 error code %1!s!. Use the Telephone method to install the Terminal Services client access licenses (TS CALs).

57

Microsoft-Windows-TerminalServices-Licensing

The certificate chain verification failed with Win32 error code %1!s!. Use the Telephone method to install the Terminal Services client access licenses (TS CALs).

58

Microsoft-Windows-TerminalServices-Licensing

The key-pack hash validation failed with error %1!s!. Please use Telephone method for CAL installation.

80

Microsoft-Windows-TerminalServices-Licensing

One Terminal Services client access license (TS CAL) of product "%1" issued to computer "%2" has been successfully revoked.

81

Microsoft-Windows-TerminalServices-Licensing

The Terminal Services client access license (TS CAL) issued to "%1" could not be revoked because the revocation limit for the product "%2" is reached. %3 of the installed %4 TS CALs are already revoked. The TS CAL revocation of this product type will be allowed after %5.

82

Microsoft-Windows-TerminalServices-Licensing

The "%1!s!" Terminal Services client access license (TS CAL) of version %2!s! belonging to computer "%3!s!" has been upgraded to "%4!s!" TS CAL of version %5!s!.

Related Management Information

TS Licensing

Terminal Services

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