If that isn't successful Microsoft offers free support for issues related to security updates.
Microsoft Security Product Support Policy
Technical support is available from Microsoft Product Support
Services at 1-866-PC SAFETY (1-866-727-2338). There is no charge for support calls associated with security updates.
International customers can get support from their local Microsoft
subsidiaries. Phone numbers for international support can be found
You can also access tech support by going to the Windows Updates or Microsoft Updates page and clicking on get help and support on the left side. I believe you reach a higher level tech more quickly using that method but either will work.