Fix Nginx Upstream Connection Refused Socket Error
When Nginx returns a 502 Bad Gateway or logs upstream connection refused
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFixing pip Externally-Managed Environment Errors
If you see the error error: externally-managed-environment when running pip in...
Node.js Heap Out of Memory Troubleshooting Checklist
When a Node.js process crashes with FATAL ERROR: CALL_AND_RETRY_LAST Allocation failed - Ja...
Python Dependency Conflict Resolution Best Practices
If you've ever run pip install and seen a wall of red text about conflicting dep...
Fix Git Push Rejected Non-Fast-Forward After Pull
You run git pull, then git push, and get: ! [rejected] non-fast-f...
Fix Windows Update Error 0x80070005 with a Clean Boot
If you see Windows Update error 0x80070005, it usually means a program or service is interfering ...
Topic paths
Quick titles
RDP Connection Timed Out - Troubleshooting GuideFix Windows Search Indexing Not Working for OutlookResolve pnpm Errors After Updating Node.jsHow to Stop Nginx Redirect Loop Caused by RewriteFix Nginx Upstream Connection Refused & Upstream Not FoundFixing a Detached HEAD State in Visual Studio CodeVSCode Terminal Error spawn ENOENT: How to FixVSCode Integrated Terminal Not Showing: Fixes to Try