I have 4 file servers and only one of them gives me problems with RDP. Occasionally you cannot log in at all or your session is booted right after you log in( within 3 seconds). The most common error message is "Because of a protocol error, this session will be disconnected. Please try connecting to the remote computer again." Sometimes there isn't evena an error message but the session abruptly ends. The server is running Server 2003 SP2 with the latest updates. When I check the event logs there are certificate errors with RDP. However, the server is configured to not use certificates for RDP.