
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...

You open Windows Security and see nothing but a white screen. The app appears to load but no cont...

You open a command prompt, type ffmpeg, and see 'ffmpeg' is not recognized as ...

If Windows Defender (Microsoft Defender Antivirus) is acting up—won't open, shows error messages,...

If Chrome suddenly starts showing authentication errors, asking you to sign in again to Google se...

You open Chrome and see a message: 'Your profile token has expired. Sign in again.' This usually ...