

Further research shows that (after the above steps) Windows Defender Antivirus service is running.But retrying the Windows Update still fails. Enter sfc /scannow (note the space between "sfc".Enter DISM.exe /Online /Cleanup-image /Restorehealth (note.Some research pointed me to run the following to fix the install problem:.Both patches fail when I try to install them.Definition Update for Windows Defender Antivirus - KB2267602 (Definition 1.261.1507.0).Update for Windows Defender antimalware platform - KB4052623 (Version 7.18011).Annoyed by the daily message I went to check Windows Update.When I check Control Panel Windows Defender shows enabled and running.After a patch some time ago I started getting error messages telling me that my antivirus is off every time I started my PC.
