Fix Windows Security Error 404 After Update
After a recent Windows update, you might see an error 404 when opening Windows Security. The app ...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listReset PowerShell Invalid Configuration Settings: Step-by-Step Fix
You open PowerShell and see an error about invalid configuration settings—perhaps a yellow warnin...
Fix Microsoft Store 'Service Unavailable' Error on Windows 11
When you open Microsoft Store on Windows 11 and see a 'Service Unavailable' message, it usually m...
Fix Windows Update Stuck on 'Pending Install' for Hours
You click 'Check for updates,' see 'Pending install,' and it stays that way for hours. The progre...
Fix Cloudflare DNS Not Working with VPN Connection
If you use Cloudflare DNS (1.1.1.1) and a VPN together, you may hit a snag where DNS stops resolv...
Fix BitLocker Service Unavailable Due to Group Policy
You might see 'BitLocker service unavailable' when trying to enable BitLocker or manage encrypted...
Topic paths
Quick titles
How to Resolve Jupyter Notebook Token Errors on macOSFix High CPU Usage by MsMpEng.exe (Windows Defender)Stop Chrome from Using Too Much CPU by Clearing CacheFix Outlook Token Expired Not Syncing: Step-by-StepFix Nginx 'unknown directive server_name' Config Test ErrorHow to Fix Permission Denied When Restoring Windows Activation BackupTroubleshoot OneDrive Network Connection LostResolve Teams Rate Limit 429 Errors