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 notesWindows Security App Not Opening on Windows 10: Fixes That Work
When you click the Windows Security icon in the Start menu or taskbar and nothing happens, it’s u...
How to Fix Docker Container Exits Immediately with Permission Denied
You start a Docker container, but it exits immediately. Running docker logs shows a ...
Fix Windows Update Error 0x800f081f Without Resetting
You're trying to install a Windows update, but it fails with error code 0x800f081f and the me...
Activate Python Virtual Environment in VS Code
You've created a Python virtual environment but can't get VS Code to use it. The terminal...
Fix Windows Cannot Access Shared Folder: Advanced Sharing Settings
You try to open a shared folder from another PC on your network, but Windows shows an error: "...
Issue queue
SitemapTroubleshoot IntelliSense Failures in VS Code Workspace
Fix Nginx Configuration Test Failure for Upstream Directive
Chrome ERR_NAME_NOT_RESOLVED on All Sites Fix
Chrome ERR_CONNECTION_RESET After Update: How to Fix
How to Fix Node Sass Build Failed Error
Fixing Python Requests Timeout Errors: Codes & Solutions
Fix Docker 'No Space Left on Device' Volume Error
Windows Python Command Not Recognized – Quick Fix
How to Fix Chrome Using 100% Memory on Windows and Mac
Fix 'nginx configuration test failed invalid parameter'
Cloudflare Origin Certificate Setup Checklist
How to Stop Windows Explorer from Restarting After Installing Software
Fix Nginx Configuration Test Failure for Upstream Directive
Chrome ERR_NAME_NOT_RESOLVED on All Sites Fix
Chrome ERR_CONNECTION_RESET After Update: How to Fix
How to Fix Node Sass Build Failed Error
Fixing Python Requests Timeout Errors: Codes & Solutions
Fix Docker 'No Space Left on Device' Volume Error
Windows Python Command Not Recognized – Quick Fix
How to Fix Chrome Using 100% Memory on Windows and Mac
Fix 'nginx configuration test failed invalid parameter'
Cloudflare Origin Certificate Setup Checklist
How to Stop Windows Explorer from Restarting After Installing Software