I am in the process of replacing a legacy system running in DOS from WIN98 clients and need to keep the 98 clients active until the transistion. My new ERP system runs only on WIN2K or XP clients so I plan to use terminal server and RDP from the 98 clients until fully implemented. I have a WIN2K3 server running terminal server. I have setup a user OU for the ERP users (ERPUsers OU) with a GPO enabling terminal server for that group of clients. My problem is that the clients can only log when I enable Remote Desktop user connectivity, and the client is a member of the remote desktop users group. The fact that Terminal services is enabled, and that the ERPUsers group has terminal services security enabled and the GPO applied seems to have no affect. I have verified permissions to the RDP-tcp connection in Terminal Services Configuration granting User Access. I've also checked that the user right assignments in domain security settings has the ERPUsers granted permissions to Allow Log On through Terminal Services. What am I missing here?