Fix Nginx Upstream Connection Refused Timeout Error
When Nginx returns 502 Bad Gateway or logs upstream connection refused timeout...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix Docker Compose 'Port Already Allocated' for MySQL
You run docker compose up and get an error like Error: Port 3306 is already al...
Fix Nginx 'upstream connection refused' When Talking to PHP-FPM
You're seeing upstream connection refused in your Nginx error log, and your site...
How to Re-enable IntelliSense in VS Code When It's Disabled
If IntelliSense suddenly stops working in Visual Studio Code—no suggestions pop up as you type, o...
Fix 'Git Remote Origin Already Exists' Error
When you run git remote add origin <url> and get fatal: remote origin al...
Fix Docker Compose Port Already Allocated for PostgreSQL
You run docker-compose up and see an error like "Error starting userland pro...
Issue queue
SitemapWindows Explorer Not Responding? Here's How to Fix It
Windows Update Error 0x80070002: Network Troubleshooting Guide
Windows 11 Install Assistant Stuck at 99% Network Fix
Resolve Docker Build Canceled by Excluding Files
Setting Up Git LFS for Large Files
Git Push Rejected: Non Fast Forward Branch Solution
How to Remove an Existing Git Remote Origin
DNS Probe Finished NXDOMAIN Router Fix Guide
Resolve Cloudflare 522 Error Due to Plugin Issues
Fix Windows Update Error 0x800f081f with Media Creation Tool
How to Resolve npm Permission Denied in VS Code
Fix npm install Permission Denied on Linux
Windows Update Error 0x80070002: Network Troubleshooting Guide
Windows 11 Install Assistant Stuck at 99% Network Fix
Resolve Docker Build Canceled by Excluding Files
Setting Up Git LFS for Large Files
Git Push Rejected: Non Fast Forward Branch Solution
How to Remove an Existing Git Remote Origin
DNS Probe Finished NXDOMAIN Router Fix Guide
Resolve Cloudflare 522 Error Due to Plugin Issues
Fix Windows Update Error 0x800f081f with Media Creation Tool
How to Resolve npm Permission Denied in VS Code
Fix npm install Permission Denied on Linux