Hi,
Firstly, please test the issue again in
Clean Boot Mode.
If issue persists in Clean Boot Mode, based on my research, please try the following:
1. Run this Microsoft Fixit and see how it works.
Fix the problem with Microsoft Windows Update that is not working
http://support.microsoft.com/mats/windows_update/
2. Run
System Update Readiness Tool.
If issue persists, please upload
Windowsupdate.log file to SkyDrive for further research.
Use SkyDrive to upload collected files.
http://social.technet.microsoft.com/Forums/en-US/w7itproui/thread/4fc10639-02db-4665-993a-08d865088d65
Hope this helps.
Jeremy Wu
TechNet Community Support
