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 listDocker Prune Not Freeing Enough Space: Practical Fixes
You run docker system prune -a expecting a big space recovery, but the freed space i...
Fix Windows Update Service Not Running After Clean Boot
If you performed a clean boot to troubleshoot an issue and later found that Windows Update won...
VS Code Source Control Not Detecting Changes: Disable Git Fix
If VS Code stops showing file changes in the Source Control panel, Git integration may be stuck o...
How to Update Git Remote Origin URL
When a repository's remote URL changes—for example, after migrating to a new Git server or sw...
Chrome Sync Not Working on School Chromebook: Fixes
If your Chrome browser isn't syncing bookmarks, passwords, or history on a school Chromebook,...
Topic paths
Quick titles
Fix Chrome Not Responding on Startup – Practical StepsFix Wi-Fi Connected but No Internet on Windows 11 (No Router Restart)Resolving Git SSL Certificate Problems on Linux macOS WindowsHow to Restore Missing Taskbar Icons After Driver UpdateTaskbar Icons Not Showing in Windows 11: Quick FixesWindows Update Service Not Running: Registry Fix GuideHow to Change Git Remote Origin to BitbucketResolving pip install Dependency Conflicts and Permission Errors