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

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

You're trying to unlock a BitLocker-encrypted drive, but you see an error about an SSL certificat...

If your Windows 10 system fan is spinning up and Task Manager shows SearchIndexer.exe using 30-90...

If Chrome shows a blank screen (white or grey) after you switch user profiles, you're not alone. ...

You open Event Viewer and see Event ID 101 under TaskScheduler with a message about an invalid co...

When running yarn install, you may encounter a timeout error like ESOCKETTIMED...