Fix Nginx Upstream Connection Refused Socket Error
When Nginx returns a 502 Bad Gateway or logs upstream connection refused
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix VS Code IntelliSense Not Showing Suggestions
You're typing code in VS Code, expecting autocomplete suggestions, but nothing appears. This ...
How to Avoid Docker Build Context Canceled Errors
If you've seen docker build context canceled during a build, it usually means th...
Fix Chrome Certificate Error After Update
After a Chrome update, you might see errors like “Your connection is not private” or “NET::ERR_CE...
Cloudflare Origin Certificate Setup Checklist
You've set up Cloudflare but your origin server still shows SSL errors or mixed content warni...
docker compose set environment variable from file
When running Docker Compose, you often need to pass environment variables to your services. Hardc...
Issue queue
SitemapHow to Add Python to PATH on Windows 10
Fix Python UnicodeDecodeError with errors='ignore'
Fix Windows Update Error 0x80070002 Due to Network Issues
Fix 0x800f081f During Windows Update Component Cleanup
Fix Nginx 'upstream connection refused' When Talking to PHP-FPM
How to Fix Remote Desktop Error 0x204
Windows 11 Assistant Stuck at 99% Registry Fix
VS Code Git Integration Not Detecting Edits
Resolve Python Dependency Conflicts
Git Detached HEAD Explained with Recovery Steps
Fix Git Push Rejected Non Fast Forward Error
Chrome Profile Sync Not Working After Update: Fixes
Fix Python UnicodeDecodeError with errors='ignore'
Fix Windows Update Error 0x80070002 Due to Network Issues
Fix 0x800f081f During Windows Update Component Cleanup
Fix Nginx 'upstream connection refused' When Talking to PHP-FPM
How to Fix Remote Desktop Error 0x204
Windows 11 Assistant Stuck at 99% Registry Fix
VS Code Git Integration Not Detecting Edits
Resolve Python Dependency Conflicts
Git Detached HEAD Explained with Recovery Steps
Fix Git Push Rejected Non Fast Forward Error
Chrome Profile Sync Not Working After Update: Fixes