If you get this message on your computer everytime when you log into your terminal server, the first thing you will check is the Termianl License server on your network. Check to see if you have valid licenses left on your terminal licnes server and make sure the license server is running ok and activated sucessfully. If it works fine but you still get this message, here is a very easy workaround:
Delete the MSLicneses registry folder under HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
This works on a Windows machine, but what if I get this message on a Mac machine, thanks Vera Noest, MVP for Terminal Server, for providing this instruction to me:
- uninstall your rdp client completely from the Mac and reboot
- delete the license from /Users/Shared/Microsoft/RDC Crucial Server Information/RDC GLOBAL DATA.
- reboot again and re-install the rdp client.
Check Vera Noest's Terminal Server and Citrix Troubleshooting website