Go to the Microsoft update site and look for the link to free tech support for update problems. They don't make it easy to find it, and I don't have a bookmark handy so you may have to hunt around.
Submit the problem and -hopefully- they'll have a solution. I've used their free update support twice at different times and it was very efficient and great quality. The techs didn't stop until they understood my (different) issues and came up with the right fixes.
You might also try posting a new thread over at that Microsoft Community too which may get the attention of Microsoft techs.
Forum Member since 2004
I am not a Dell employee