When you activate a Terminal Server License Server, Terminal Server clients that don't have a valid Terminal Server license are unable to obtain one?

If you installed the Terminal Server Licensing Server as an Enterprise License server, this problem can occur.

To determine if you installed as an Enterprise License Server:

1. Use Regedt32 to navigate to HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\TermServLicensing\Parameters.

2. The Role value name contains a 1 if you installed as a Enterprise License server, and a 0 for a Domain/Workgroup License Server.

If you installed as an Enterprise License server:

1. Start Terminal Services Licensing Manager and record the number of available client access licenses.

2. Uninstall the license server:

        Control Panel / Add/Remove Programs / Add/Remove Windows Components.
        Clear the Terminal Services Licensing box and press Next.
        On the Terminal Services Setup screen, press Next.
        Press Finish.

3. Install the license server as a domain license server:

        Control Panel / Add/Remove Programs / Add/Remove Windows Components.
        Check the Terminal Services Licensing box and press Next.
        Select the Domain or Workgroup option and press Next.
        On the Terminal Services Setup screen, press Next.
        Press Finish.

When complete, call the Microsoft Clearinghouse, at 1-888-571-2048, to reactivate the server and reclaim the licenses that were lost when you uninstalled.