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 notesFix Ethernet Connected but No Internet on Windows 11
You plug in an Ethernet cable, Windows 11 shows you're connected, but websites won't load...
Fixing Docker Pull Access Denied on Linux: Permission Error Guide
If you see docker pull access denied or a permission error on Linux, it usually mean...
Fix Nginx 'Permission Denied' Upstream Errors
When Nginx logs permission denied while connecting to an upstream (e.g., a Unix sock...
Docker Container Exits Immediately on Linux: Fixes
You start a Docker container, but it exits immediately. This is a common issue on Linux. The cont...
Chrome Sync Not Working After Disabling Extensions: Fixes
You disabled some Chrome extensions to troubleshoot a problem, and now sync has stopped working –...
Issue queue
SitemapFix Git Detached HEAD Without Losing Work
Docker Compose Multiple Environment Files Not Merging? Fix Here
How to Resolve Windows 11 Error 0x800f081f
Fix Permission Denied on chmod in VS Code Terminal
Python Virtual Environment Not Activating After Install: Fixes
Troubleshoot Docker Engine Startup Failure Windows
Windows Search Indexing Not Working Solutions
Resolve Python Dependency Conflicts in Virtualenv
VS Code Can't Save File: Permission Denied Troubleshooting
Windows Docker Desktop Engine Not Running Guide
Troubleshooting Cloudflare Error 522: Step-by-Step
How to Resolve Command Not Found in VS Code Terminal
Docker Compose Multiple Environment Files Not Merging? Fix Here
How to Resolve Windows 11 Error 0x800f081f
Fix Permission Denied on chmod in VS Code Terminal
Python Virtual Environment Not Activating After Install: Fixes
Troubleshoot Docker Engine Startup Failure Windows
Windows Search Indexing Not Working Solutions
Resolve Python Dependency Conflicts in Virtualenv
VS Code Can't Save File: Permission Denied Troubleshooting
Windows Docker Desktop Engine Not Running Guide
Troubleshooting Cloudflare Error 522: Step-by-Step
How to Resolve Command Not Found in VS Code Terminal