Terminal Server Client 'Name' has provided an invalid license

[John Heagy]

The above message is coming from our 2000 professional
users, all of them. The license has not changed but this
started all of the sudden, this morning. Any hints would
be most appriciated.

 

[Vera Noest [MVP]]

Is this a NT 4.0 TSE? Do you get EventID 1003? Check:

294326 - Event ID 1003: Terminal Service Client Has Provided an
Invalid License
http://support.microsoft.com/?kbid=294326