Fix Windows Security App Not Starting on Windows 11
You click the Windows Security icon or try to open it from Settings, but nothing happens. The app...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix Windows 11 Installation Assistant Stuck at 99% in Safe Mode
If you're running the Windows 11 Installation Assistant in Safe Mode and it gets stuck at 99%...
Fix Cloudflare Wildcard Subdomain Page Rule Not Working
You set up a wildcard subdomain page rule in Cloudflare—like * .example.com/*—but it...
Fix Nginx Upstream Connection Refused Error
If you see upstream connection refused in your Nginx error logs, it means Nginx trie...
Fix 'git remote origin already exists' with Wrong URL
You run git remote add origin <url> and get: fatal: remote origin alread...
How to Rebuild Taskbar Icon Cache in Windows 10
If your Windows 10 taskbar icons appear blank, wrong, or missing, the icon cache may be corrupted...
Issue queue
SitemapTroubleshooting Nginx SSL Certificate File Access
How to Solve Nginx Permission Denied on Ubuntu
Cloudflare Origin Certificate Mismatch Troubleshooting
VSCode Python Debugger Ignores Breakpoints: Solutions
Resolving npm run build Errors on macOS
How to Resolve npm Install Permission Denied on Linux
Chrome ERR_NAME_NOT_RESOLVED: A Practical Fix Guide
Fix 'Permission Denied' When Running pip install --user
Understanding Git Merge Conflict Markers: A Practical Guide
How to Handle UnicodeDecodeError in Logging
Explorer.exe Keeps Restarting? Practical Fixes
Chrome Extensions Not Loading – How to Fix
How to Solve Nginx Permission Denied on Ubuntu
Cloudflare Origin Certificate Mismatch Troubleshooting
VSCode Python Debugger Ignores Breakpoints: Solutions
Resolving npm run build Errors on macOS
How to Resolve npm Install Permission Denied on Linux
Chrome ERR_NAME_NOT_RESOLVED: A Practical Fix Guide
Fix 'Permission Denied' When Running pip install --user
Understanding Git Merge Conflict Markers: A Practical Guide
How to Handle UnicodeDecodeError in Logging
Explorer.exe Keeps Restarting? Practical Fixes
Chrome Extensions Not Loading – How to Fix