I cannot install Windows Updates on any server while logged in as the domain administrator.
The domain controller was recently migrated from a Server 2003 machine to a Server 2008 machine. This included an old administrator account with a different username. This user account can install updates.
I'd like to get rid of the old administrator account and continue on with the new one, however I can't see the differences between these two accounts that would effect installing Windows Updates (e.g. group memberships).