Windows cannot determine the user or computer name. (The specified domain either does not exist or could not be contacted. ). Group Policy processing aborted. Automatic certificate enrollment for local system failed to contact the active directory (0x8007054b). The specified domain either does not exist or could not be contacted. Enrollment will not be performed. I find these errors in the Event Viewer Application section. I also take a long time to login. I have a Windows 2000 server runing AD and DNS is running but DHCP comes from the Asante router via Pacbell.