
Windows Defender Access Denied Troubleshooting Checklist
You try to open Windows Defender or run a scan and get an "Access Denied" message. This usually m...

You try to open Windows Defender or run a scan and get an "Access Denied" message. This usually m...

Windows Security (formerly Windows Defender) may sometimes get stuck on a loading screen or show ...

You open OneDrive and see a blank screen with error code 0x8004de40. This usually means the app c...

When you try to update or run Windows Defender, you might see error 0x80070643 with a message lik...

You click the extension icon, but nothing happens. Or the extension is grayed out, missing from t...

After restarting your computer to complete a Visual Studio installation or update, you might see ...