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

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

You see "Task Scheduler invalid configuration" when opening a task or trying to run it. The error...

You sign in to Windows, but instead of your desktop, you see the activation screen again—over and...

When you try to connect to a remote PC and see "Remote Desktop Service Not Available" or "The rem...

If Windows Defender won't start and you see an error about invalid configuration, the problem is ...

If you are experiencing choppy video calls, slow message delivery, or frequent disconnects in Mic...