Set Windows Defender Threat Service to Automatic Startup
If Windows Defender is not running or you see errors like “Threat service has stopped,” the under...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listWindows Defender Service Troubleshooting Checklist
If Windows Defender won't start, won't update, or shows error messages like "Service stopped" or ...
Fix Microsoft Store Error 0x80073cf0 When Updating Apps
When you try to update apps in the Microsoft Store, you may see error code 0x80073cf0. This usual...
Fix Windows Update Token Expired Permission Denied
If you see a Windows Update error saying "token expired" or "permission denied," it usually means...
How to Fix Remote Desktop Not Connecting
You try to connect to a remote PC via Remote Desktop (RDP) and get an error, or the connection ju...
Windows Search Troubleshooting Checklist: Fix Common Issues
Windows Search can stop working for many reasons. You might see no results, slow searches, or hig...
Topic paths
Quick titles
Resolve Microsoft Teams Cache ErrorsHow to Fix Windows Terminal Installation FailureWindows 11 Windows Security Startup TroubleshootingResolve Chrome Proxy Authentication FailureHow to Break Out of a Windows Terminal Login LoopTroubleshoot Windows Search Not Working Due to SSL ErrorResolve Stuck Windows Update CleanupResolve 504 Gateway Timeout in Windows Search