ON SERVER:
Go to %WINDIR%\system32\lserverNotice the file TSLIC.edb. Rename it to tslic.old
ON CLIENT:
In every client computer, remove the CAL TS registry keys, located
at:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSLicensing
Restart your server.
ALTERNATIVELY:
On SERVER
1. UnInstall the Terminal Server Licensing
2. Install the Terminal Server Licensing again
3. Restart server
On CLIENT
1. Delete the whole key called : HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSLicensing
