For the last two months I have been unable to turn on windows update. Control panel says "Windows Update has been disabled by your system administrator". There is only one user on the computer, and that is me, and I have administrator privileges. I was working fine for about one year. Now I have to remember to check for updates manually every once in a while. I can download and install them.
The computer is a personal desktop which has never been attached to a network, so no group policy could be coming into play. The computer is otherwise clean and healthy.
On the support pages I found a program which was supposed to fix this (Fix-it (Reset Windows Components): http://support.microsoft.com/kb/971058/en), but when I ran it, nothing changed, even in aggressive mode. My restore points do not go back far enough (it took a while for me to notice there were no updates). Is there manual registry edit I can make?