July 17, 2008 at 10:42 AM
It seems that KB948109 has caused some trouble for many people. On my Windows Server 2003 machine the installation failed with error code 1920:
MSP Error: 1920 Service 'SQL Server VSS Writer' (SQLWriter) failed to start. Verify that you have sufficient privileges to start system services.
I checked the SQL Server related services and found that the SQLWriter service and other services were disabled.
This wasn't really surprising, given that I had disabled all services I don't use. However it caused the installation to fail, becausen the installer wasn't able to start the disabled services.
So I set the service startup type to manual, manually re-ran the installer and everything worked out fine. After installation I disabled the unneeded services again.