How to Fix Nginx 'Upstream Connection Refused' Error
When Nginx returns a 502 Bad Gateway with upstream connection refused in the error l...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesResolving Git Merge Conflicts Between Two Branches
You try to merge branch A into branch B, but Git reports a merge conflict. This is common when bo...
How to Fix Git index.lock File Exists Error on Mac
If you're working with Git on a Mac and see the error fatal: Unable to create '/pat...
Docker Container Exits Immediately on Mac: Fixes
You start a Docker container on your Mac, and it stops within seconds. The container exits immedi...
Fix Git Authentication Failed in VS Code on Mac
If you see "Git authentication failed" when pushing or pulling in VS Code on a Mac, the p...
Docker Container Exits Immediately with Code 0: Fixes
You run a Docker container and it stops almost instantly with exit code 0. This means the main pr...
Issue queue
SitemapCloudflare Origin Certificate Setup for Apache
Windows 11 Installation Assistant Not Responding – 99% Hang Fix
Python Virtual Environment Dependency Fix
Git SSL Certificate Problem: Corporate Proxy Workaround
Fixing Python Requests Connection Timeout Errors
Fix 'pip install externally managed environment' Error
How to Stop Chrome Memory Spikes During Video Playback
VS Code Debugger Won't Stop at Breakpoints on Windows
Mac Docker Container Exits Right After Start
Windows Security App Reinstall Guide
Windows 11 Update Error 0x80070002: Causes and Fixes
Fix Breakpoints Not Hitting in VS Code on Windows
Windows 11 Installation Assistant Not Responding – 99% Hang Fix
Python Virtual Environment Dependency Fix
Git SSL Certificate Problem: Corporate Proxy Workaround
Fixing Python Requests Connection Timeout Errors
Fix 'pip install externally managed environment' Error
How to Stop Chrome Memory Spikes During Video Playback
VS Code Debugger Won't Stop at Breakpoints on Windows
Mac Docker Container Exits Right After Start
Windows Security App Reinstall Guide
Windows 11 Update Error 0x80070002: Causes and Fixes
Fix Breakpoints Not Hitting in VS Code on Windows