Fix Windows Defender Service Not Starting (Error 404)
If you see error 404 when trying to start Windows Defender, it usually means the service executab...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix OneDrive Sync Setup Access Denied Errors
When trying to set up OneDrive sync, an 'Access Denied' error usually appears because of folder p...
Fix Windows Search Token Expired Permissions Error
You open Windows Search and get an error about a token being expired or permissions being invalid...
How to Fix Windows Defender 404 Not Found Error
If you see a "404 Not Found" error when opening Windows Defender, it often means a required file ...
How to Fix Windows Search Access Denied Service Errors
When you search for files or settings in Windows and get an 'Access Denied' error related to the ...
Windows 10 Activation Troubleshooting Checklist
When Windows 10 shows an activation error, the cause is usually a recent hardware change, a corru...
Topic paths
Quick titles
Fix Task Scheduler Version Error on Windows 10How to Configure Outlook on UbuntuWindows 10 Task Scheduler Rate Limit Error FixBitLocker Module Not Found: Configuration Fix GuideTroubleshooting 502 Bad Gateway During Windows ActivationRepair Corrupt PST for Successful Backup RestoreResolve Windows Search Module Not Found ErrorHow to Sync Chrome Extensions Across Devices