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 listDebugging Jest Tests in VS Code: Breakpoints Not Hit
You set a breakpoint in a Jest test file, start debugging, and the test runs to completion but th...
Fix Windows 11 Blue Screen After Update with Bootable USB
After a Windows 11 update, some systems boot into a blue screen (BSOD) or crash loop. This usuall...
Fixing VS Code Git Authentication Failed Error
If you see "Git authentication failed" when pushing or pulling in VS Code, it usually mea...
Fix Chrome Black Screen Flickering from Hardware Acceleration
If Chrome shows a black screen or flickers when watching videos, scrolling, or opening menus, har...
How to Validate Nginx Configuration Before Reload
Reloading nginx with a broken configuration can take your site down. The safe way is to test the ...
Topic paths
Quick titles
Fix Docker 'No Space Left on Device' on Windowsnpm EACCES Error: How to Avoid sudoResolve 502 Bad Gateway in Docker Nginx MySQL SetupFix VS Code Git Changes Not Showing in Source Control PanelHow to Manually Remove a Stuck Git index.lock FileTroubleshooting Chrome Extensions That Fail to LoadHow to Resolve Git Clone Connection Timed OutERR_CONNECTION_RESET in Chrome: How to Fix