
Windows Defender Service Troubleshooting Checklist
If Windows Defender won't start, won't update, or shows error messages like "Service stopped" or ...

If Windows Defender won't start, won't update, or shows error messages like "Service stopped" or ...

You click the Chrome icon and instead of your browser opening, you see an error: "Chrome profile ...

You run Windows Update and get error 0x80070002 with a message about a version mismatch. This usu...

If you suspect Windows Defender missed a threat or want to review past detections, the logs are s...

If Windows Security won't open, shows errors, or you see "This app has been turned off" messages,...

If you've lost scheduled tasks after a system restore or migration, restoring a Task Scheduler ba...