After booting a Windows NT 4 Terminal Services Edition server that is properly service packed, the console logon prompt fails to appear. The background image appears quite soon after the blue bootup screen ...... clears but an invitation to logon never appears. We know the keyboard and mouse work because they can be used to enter the BIOS atc. before NT4 TSE starts. Microsoft indicates that winlogon.exe should start automatically before TS logon services to provide this screen. Pressing CRTL-ALT-DEL does not do anything although the invitation to logon should already have appeared by itself. There is no Citrix software loaded. Another NT4 TS server that works correctly has been examined for the HKLM\software\microsoft\windows nt\winlogon registry key settings, they are identical to the problem machine's. There is no automatic logon set up on either machine, they are as inIt is possible to connect to the problem server remotely and it seems otherwise operational. There is plenty of disk space, spare memory and cpu time. This problem affects the staff's ability to start up and close down / maintain the system. What happens if TS logon services fail to start one day ? Any light you can shed on this would be much appreciated, thanks - Sp6a