
How to Reinstall the Windows Security App (Microsoft Defender)
If the Windows Security app (Microsoft Defender) is missing, won’t open, or shows errors, reinsta...
Software troubleshooting desk

If the Windows Security app (Microsoft Defender) is missing, won’t open, or shows errors, reinsta...

You try to sync files in OneDrive and get a "permission denied" error. This usually means OneDriv...

When you try to run Windows Defender commands from Command Prompt and get a '404 Not Found' error...

If you see 'token expired' in Windows Terminal, it means the authentication token for a service (...

If you see error 0x80070422 when trying to run Windows Update, it usually means Windows can’t con...

You try to install Windows updates but get error 0x80070020. This usually means another program o...