Fix Nginx Upstream Connection Refused in Proxy Pass
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 notesChrome Using Too Much RAM? Here's How to Fix It
If your computer slows down or fans spin up when Chrome is open, you're likely seeing Chrome ...
VS Code Source Control Not Detecting Changes After Git Reinstall
If you reinstalled Git and VS Code's Source Control panel stopped detecting file changes, you...
Fix 'pip externally managed environment' Permission Denied Error
If you see error: externally-managed-environment when trying to install a Python pac...
Fix Windows 11 Installation Assistant Stuck at 99%
You're running the Windows 11 Installation Assistant, it reaches 99%, and then sits there. No...
Fix 'git remote add origin already exists' Error
When you run git remote add origin <url> and see fatal: remote origin al...
Issue queue
SitemapWindows Remote Desktop Setup: A Practical Checklist
How to Enable Windows Defender Real-Time Protection
How to Fix Docker Volume Permission Denied Errors
Git Detached HEAD Explained and Troubleshooting Guide
How to Fix pip Externally Managed Environment Error
How to Resolve Git Token Expired in VSCode
Resolve npm Build Errors After Pulling Code
VS Code Breakpoint Greyed Out: Causes and Solutions
Solving Node.js FATAL ERROR Allocation Failed on Windows
Troubleshooting Nginx Config Test Permission Issues
Fix Missing Environment Variables in Docker Compose
Troubleshoot Locked User Account in RDP Connection
How to Enable Windows Defender Real-Time Protection
How to Fix Docker Volume Permission Denied Errors
Git Detached HEAD Explained and Troubleshooting Guide
How to Fix pip Externally Managed Environment Error
How to Resolve Git Token Expired in VSCode
Resolve npm Build Errors After Pulling Code
VS Code Breakpoint Greyed Out: Causes and Solutions
Solving Node.js FATAL ERROR Allocation Failed on Windows
Troubleshooting Nginx Config Test Permission Issues
Fix Missing Environment Variables in Docker Compose
Troubleshoot Locked User Account in RDP Connection