When you use the Windows Update website or the Microsoft Update There is a link on the page to Microsoft Fixit - the run now button Troubleshooter may automatically fix the problem described in this The Automatically diagnose and fix common problems with Windows Update When you use the Windows Update website or the Microsoft Update website to check for and install updates, you may receive one of the errors that are listed in the 'Symptoms' section. Windows defender virus & spyware definition not updating
