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 listFix Windows 11 Installation Assistant Stuck at 99% in Safe Mode
If you're running the Windows 11 Installation Assistant in Safe Mode and it gets stuck at 99%...
Checklist for Fixing Windows Search Indexing
If your Windows search is returning no results, taking forever, or missing files, the indexing se...
Windows 11 Update Stuck at 0% Due to Corrupt Files: Fixes
You start a Windows 11 update, and it hangs at 0% for minutes or hours. Corrupt system files are ...
Recover Lost Changes After Git Detached HEAD
You've made several edits, then checked out an old commit or tag, and now Git says you're...
Fixing Nginx 502 Bad Gateway in Docker: Practical Steps
You set up Nginx as a reverse proxy in Docker, but instead of your app you see a 502 Bad Gateway....
Topic paths
Quick titles
Windows Docker Desktop Engine Not Running GuideFix Bluetooth Not Showing in Device Manager on Windows 11Resolve Cloudflare 521 Server Down ErrorNginx Upstream Socket Permission Denied GuideResolve Windows 11 Upgrade Stuck at Registry StepFix 'Git Remote Origin Already Exists' on BitbucketHow to Fix VS Code Git Changes Not Showing on Windows 11Resolving pip's Externally Managed Environment Error on Linux