Hallo Markus,
dann weißt Du ja, was Du ab jetzt alle 90 Tage zu tun hast.
Spass beiseite. Was sagt MS dazu:
"Each Terminal Server Client gets a license the first time it connects to the Terminal Server. The Client connects with that license until the license expires. The license is stored in the Client's registry.
Thirty-two bit RDP clients store their license under the key HKEY_LOCAL_MACHINE\Software\Microsoft\MSLicensing.
WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.
To clean the Client's license cache, just delete this key (and its subkeys). The next time the client connects to the server, it will get another license.
For 16-bit RDP clients, run regedit /v. Then delete the keys under "\Software\Microsoft\MSLicensing" to clean the Client's license cache. You can also delete the BIN files from \Windows\System\Regdata."
Eigentlich hätte das helfen müssen. Was steht denn bei Dir unter Terminaldienstekonfiguration\Servereinstellungen -> Lizenzierung (Gerät od. User) und gibt das Ereignisprotokoll was her?
Gruss
Torsten