Fix Nginx Upstream Connection Refused in Proxy Pass
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 listHow to Fix Cloudflare Error 521: Origin Server Unreachable
If you see Cloudflare error 521, your origin server is not responding to Cloudflare's request...
Fix Chrome Status Access Violation Error on Windows
If you see a message like "STATUS_ACCESS_VIOLATION" in Chrome, the browser has crashed du...
Fix Git Stash Error: index.lock File Exists
You run git stash and see: fatal: Unable to create 'path/.git/index.lock&#...
Fix Windows Update Error 0x80070005 System Volume Information
When you see Windows Update error 0x80070005 with a reference to System Volume Information, it us...
Fix 'Permission Denied' in VS Code Terminal
If you see Permission denied when running commands in the VS Code integrated termina...
Topic paths
Quick titles
How to Resolve Git Push Rejected Non Fast ForwardFix Python venv Not Activating in VS Code TerminalHow to Fix Windows Update Stuck with Error 0x80070002How to Fix Nginx Permission Denied ErrorsGit Push Rejected: Non-Fast-Forward Error FixFix VSCode Terminal Not Opening with PythonHow to Resolve Git SSL Certificate 'Unable to Get Local Issuer'Git Merge Unrelated Histories: When and How to Use --allow-unrelated-histories