Fix Nginx 502 Bad Gateway: Upstream Connection Refused
If you're seeing a 502 Bad Gateway error with "upstream connection refused" in your N...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listNginx Upstream Connection Refused: Diagnosis and Fixes
When Nginx returns a 502 Bad Gateway or logs "upstream connection refused", it means Ngin...
Fix Git Pull Unrelated Histories Error: Step-by-Step
You run git pull and see: fatal: refusing to merge unrelated histories....
Fix Edge Sync Not Syncing Tabs Across Devices
You open a tab on your desktop, but it doesn't show up on your phone or laptop. This is a com...
Fix Permission Denied on chmod in VS Code Terminal
You're running chmod in the VS Code integrated terminal and seeing 'permissi...
How to Fix Nginx 502 Bad Gateway in Docker
If you're running Nginx as a reverse proxy inside Docker and seeing a 502 Bad Gateway error, ...
Topic paths
Quick titles
Resolving Git's Refusing to Merge Unrelated HistoriesPermission Error After Upgrading pip: SolutionsCloudflare 521 Error: Origin Server Unreachable FixDocker Container Exits Immediately: 'Command Not Found' FixHow to Restart Windows Update After SFC ScanDebug React Apps: VS Code Breakpoint TroubleshootingCloudflare 522 Timeout: Disable Proxy TemporarilyTroubleshooting Docker Bridge Network Not Found