
How to Restart Windows Defender Threat Service
If Windows Defender shows a warning like "Threat service has stopped" or "Virus & threat protecti...
Software troubleshooting desk

If Windows Defender shows a warning like "Threat service has stopped" or "Virus & threat protecti...

You open Windows Security and see an error that the service isn't running. Or you get a notificat...

You run Disk Cleanup, check "Windows Update Cleanup", but nothing happens—or the option is missin...

You click Install, the progress bar moves a little, then you see "Installation failed" with an er...

You open Windows Security and see the message: "Invalid configuration" or "Something went wrong. ...

When you see event ID 4625 in the Windows Security log, it means an account failed to log on. Thi...