We have a client running MAS 200 4.40.0.10 with JobOps on 64 bit Windows Server 2008 R2 Enterprise SP1 server with Xeon CPU-2640 @ 2.5GHz with 10 GB RAM. The users log in via RDP. The terminal server is a separate box. MAS is running as a service and we occasionally get problems where a user session ""locks up"" by throwing an error on the MAS server. The error has to be cleared before the user can log back into MAS. This happens about twice a week and it can be a hassle to clear the error. Does anyone have any ideas as to what might be triggering these errors?