You should try purging your windows update cache. Open the folder Program
Files\Windowsupdate, and delete everything there except for wuhistv3.log.
Make sure you're viewing hidden files and delete any hidden files as well.
Then, go to windows\downloaded program files, and look for an entry labeled
"CV3 class". Right-click on the icon and choose "remove". then, go to your
windows\system32 directory and delete the file "wuv3is.dll" if it's still
there. finally, go back to the website and see whether the problem is
resolved. If not, post back here and let us know your operating system
version and locale, the version of Internet Explorer, and what your internet
configuration is (behind a proxy?).
Windows Update Sustained Engineering
All advice is offered as-is without warranty of any kind