Clients receive an error message that a temporary license will expire in x number of days

Posted on December 28th, 2007 by thehabgroup

Make sure that discovery is working between the terminal server and the license server. For more information, see the “Terminal Server cannot locate the license server” section.
Verify the licensing mode of the terminal server. If it is in Per Device mode, and the license server has Per User CALs installed, this problem will occur. Change the licensing mode of the terminal server to Per User mode.
- Although you do not have to delete the temporary TS CAL (HKLM\Software\Microsoft\MSLicensing), the error message will continue to appear until the TS CAL expires. To resolve this problem immediately, delete the registry key on the client. However, the error message can be ignored, and the client will not lose connectivity to the terminal server even after the temporary TS CAL has expired.
- If the terminal server is in Per User mode, and the clients are receiving this error message, the terminal server was originally in Per Device mode when the clients connected and received a temporary Per Device CAL. To resolve this problem immediately, delete the registry key on the client.