Fix Windows Search Token Expired Error 0x80090016
If you see the error “Windows Search Token Expired” with code 0x80090016, it usually means the se...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Windows Activation Error 0x8007232B: Service Unavailable
When you see the error "Windows Activation Service Unavailable" with code 0x8007232B, Windows is ...
Fix Windows Update Service Fails to Start After Update
After installing a Windows update, you may find that the Windows Update service (wuauserv) fails ...
Fix Windows Security 404 Error & Missing Files
If you see a 404 error in Windows Security or get messages about missing files, the Security Cent...
Windows Security Stuck Loading: Practical Fix Checklist
Windows Security (formerly Windows Defender Security Center) sometimes gets stuck on a loading sc...
How to Clear Windows Security Threat History That Won't Delete
You've resolved a virus or malware issue, but the threat history in Windows Security still shows ...
Topic paths
Quick titles
Access Denied Error in Windows Defender After UpdateHow to Use Windows Defender Command Line ToolsTroubleshoot Windows Activation Auto Launch FailureHow to Enable Windows Defender via Command PromptMicrosoft Store Sync Problem: Invalid Configuration FixHow to Fix 'ERR_TUNNEL_CONNECTION_FAILED' on Chrome for MacElevate PowerShell Script to AdministratorFix Chrome ERR_TUNNEL_CONNECTION_FAILED When Using VPN