
Microsoft Store Authentication Failed: Quick Fix Checklist
You open the Microsoft Store, try to sign in, and get an authentication failed error. This can ha...
Software troubleshooting desk

You open the Microsoft Store, try to sign in, and get an authentication failed error. This can ha...

When you try to open or download an app from the Microsoft Store on Windows 10, you might see a 4...

You open Task Manager and see Windows Security (or Antimalware Service Executable) using 500 MB o...

If you boot into Safe Mode and open Windows Security only to see a blank white or gray screen, yo...

You type a query into the Start menu or File Explorer search bar, and instead of results, you see...

If Windows Defender is disabled on your system—often due to group policy, third-party antivirus, ...