The quickest and easiest repair option is the Windows Update Troubleshooter. Open Control Panel, click in the search box, and type troubleshoot. Click the Troubleshooting link at the top of the search results, then click System and Security, and finally click Windows Update. The troubleshooter runs quickly. On my system, which had no noticeable issues with recent updates, it detected a minor problem and fixed it.
I would think it is vital for Microsoft to have a working Windows update. That thing is supposed to fix errors in the OS -and there have been a few
