How to Fix Windows Security 404 Not Found Error
If you see a '404 Not Found' error when opening Windows Security (formerly Windows Defender), the...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listHow to Fix Command Prompt Permission Denied Error
When you see 'Access Denied' or 'Permission Denied' in Command Prompt, it usually means your user...
How to Fix GitLab Runner Stuck in Pending State
You push a commit, the pipeline starts, but the job sits in "pending" status indefinitely. This u...
Fix Chrome Profile File Locked by Another User
If Chrome shows "Your profile could not be opened correctly" or "The profile appears to be in use...
Fix Windows 11 Update Stuck on Loading Screen
You're updating Windows 11, and the screen shows a spinning circle or a progress bar that hasn't ...
Fix PowerShell Service Unavailable After Update
After a Windows update, you might see errors like "Service Unavailable" when trying to launch Pow...
Topic paths
Quick titles
How to Fix Windows Search Proxy Configuration Tool IssuesSetup Windows Security to Fix 502 Bad Gateway ErrorFix Microsoft Store 502 Bad Gateway ErrorResolve System Error 1326 in Net UseResolve OBS Studio Black Screen Capture IssueWindows Search DNS Error TroubleshootingFix Windows Activation Delay After Hardware ChangeHow to Get Chrome Debug Logs Working Again