
Windows Defender Troubleshooting Checklist
Windows Defender (now Microsoft Defender Antivirus) usually runs quietly in the background, but s...

Windows Defender (now Microsoft Defender Antivirus) usually runs quietly in the background, but s...

You run Disk Cleanup, select Windows Update Cleanup, and nothing happens—or it fails with an erro...

If Windows Update won't start or you see an error that the update service is not running, it's us...

If you're seeing frequent 'database is locked' errors when multiple processes or threads access t...

You're updating Windows and it gets stuck at 30% during the migration phase. This often happens w...

You try to scan a folder with Windows Defender and see 'Permission Denied' or 'Access Denied'. Th...