
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 try to use Windows Search, but it keeps asking you to sign in again and again—even after you ...

If your system feels sluggish and Task Manager shows SearchIndexer.exe using 500 MB or more of RA...

If Windows Defender keeps crashing and restarting on your Windows 10 PC—showing error messages, d...

If you boot into Safe Mode to troubleshoot a stuck Windows Update, only to find the update still ...

After a Windows update, you might find that Remote Desktop (RDP) no longer connects to your PC. T...