
Windows Defender Service Troubleshooting Checklist
If Windows Defender won't start, won't update, or shows error messages like "Service stopped" or ...
Software troubleshooting desk

If Windows Defender won't start, won't update, or shows error messages like "Service stopped" or ...

After a Windows update, you might find that the Microsoft Store won't open, apps fail to download...

If a Windows update shows "Pending install" and never completes, the system is stuck waiting. Thi...

You open Chrome and see an error like “Your profile is missing permissions” or “Cannot load profi...

You sign in to Windows, but instead of your desktop, you get the Windows Security login prompt ag...

You open Windows Defender Security Center or try to run a scan, and you see an error saying a por...