Fix Nginx 502 Bad Gateway: Upstream Connection Refused
If you're seeing a 502 Bad Gateway error with "upstream connection refused" in your N...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix pnpm ERR! Cannot Find Module – Practical Steps
When running pnpm install or pnpm start, you might see an error like:
Fix Docker Container Exits Immediately After Start
You run docker run myimage and the container stops almost instantly. This is a commo...
Windows Defender Real-Time Protection Registry Fix Guide
If Windows Defender real-time protection won't turn on or keeps turning off, a registry fix c...
Fix Windows 11 Installation Assistant Stuck at 99% SFC Scan
You're upgrading to Windows 11 using the Installation Assistant, and it hangs at 99% while ru...
Fix Windows Update Service Not Running in Event Viewer
You open Event Viewer to check for errors after a failed Windows Update, and you see an event sta...
Issue queue
SitemapResolving Git's Refusing to Merge Unrelated Histories
Troubleshooting Nginx Config Test Permission Issues
How to Fix npm Package Json Not Found Error
VS Code Breakpoint Greyed Out: Causes and Solutions
How to Unblock Windows Security App
External Monitor Black Screen in Chrome Troubleshooting
Conda Not Working in VS Code Terminal
Fix VSCode Git Auth Failed: Expired Token
Restore Windows Defender After Clean Boot
Resolve 'invalid parameter' in Nginx Config Test
Python Large File Processing Without Memory Error
Fix Error 0x800f081f in Windows 11: Step-by-Step Guide
Troubleshooting Nginx Config Test Permission Issues
How to Fix npm Package Json Not Found Error
VS Code Breakpoint Greyed Out: Causes and Solutions
How to Unblock Windows Security App
External Monitor Black Screen in Chrome Troubleshooting
Conda Not Working in VS Code Terminal
Fix VSCode Git Auth Failed: Expired Token
Restore Windows Defender After Clean Boot
Resolve 'invalid parameter' in Nginx Config Test
Python Large File Processing Without Memory Error
Fix Error 0x800f081f in Windows 11: Step-by-Step Guide