I have an SBS2003 Domain Controller that has been working fine for several years now. Yesterday I decided to move the PageFile from C: to D: because I was running low on C: disk space.
To do this I went into the Virtual Memory settings, changed C: to No Paging File, changed D: to System Managed Size and then rebooted the server.
Since this reboot nothing is working properly. Workstations take 5 times longer to boot because they stall for 10 minutes at "Preparing Network Connections". Event log entries at the workstation say that no DC was found. DHCP fails but if I assign a static IP I can ping the DC and get my SQL Server apps to run. Attempts to map a share on the DC fail. No error message, they just never get mapped and you have to close Windows Explorer down. DNS is working fine as I can ping the DC's computer name from teh workstation and the response is fine.
Event log entires on the DC say that there is a critical error reading a group policy file (I'm sorry that I don't have the exact error message here). I cannot RDC to the server because after entering credentials it goes to a gray screen and never displays the desktop.
Attempts to access the Domain Controller Security Policy or Domain Security Policy consoles fail. I have moved the PageFile back to C: but that has not corrected the issue.