- Reason: "SQL Server does not exist or access denied" - See ME920899
- Reason: "Cannot open database requested in login 'SUSDB'" - From a newsgroup post: "I also had this error along with a message on the WSUS admin page stating that the WSUSService did not start. To resolve this, I went on my WSUS server services and I changed the "Update Services" service to use the local system instead of the network authority. Once I did that and restarted my IIS services, the error went away". From the same newsgroup post: "Instead of trying to fix it, I just uninstalled and resinstalled WSUS. It was easy and pretty fast, and after I configured my settings again, all my clients attached, I synronized again and I was good to go".
- Reason: "Login failed for user '(null)'" - From a newsgroup post: "On the Front End computer in a Front End/Back End WSUS installation you are probably dealing with a DTC problem. You need to enable DTC and allow access to un-authenticated users. Perform this on the front end computer:
1.Go to administrative tools and open Component Services.
2.Expand the Component Services Group
3.Click on Computers
4.Then in the right hand pane, right click on My Computer
6.Click the MSDTC tab
7.Click the Security Settings Button
8.Now make sure every check box is checked and the No Authentication radio button is selected.
9.Click OK and say yes to anything it asks you to do.
This should fix this problem".