Windows update
Trouble
Update broken
Some times (especially when a rollback to a restore point) Windows Update gets into a funky state. To reset Windows update, and force it to rediscover which updates are actually needed, run:
net stop bits
net stop wuauserv
ren %systemroot%\softwaredistribution softwaredistribution.bak
ren %systemroot%\system32\catroot2 catroot2.bak
net start bits
net start wuauserv