Fix Nginx Upstream Connection Refused Timeout Error
When Nginx returns 502 Bad Gateway or logs upstream connection refused timeout...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesChrome Certificate Error: Not Secure Site Workaround
You're trying to reach a site and Chrome shows a full-page warning: “Your connection is not p...
How to Fix Nginx 'Upstream Connection Refused' Error
When Nginx returns a 502 Bad Gateway with upstream connection refused in the error l...
Windows 10 Taskbar Icons Not Showing? Here's How to Fix It
You log into Windows 10, and the taskbar is nearly empty—no icons for open apps, pinned programs,...
How to Fix Git Push Rejected Non-Fast-Forward Error
You run git push and get ! [rejected] with non-fast-forward
Fix Explorer.exe Keeps Restarting in Windows 10
If your File Explorer (explorer.exe) keeps restarting on Windows 10, you'll see the taskbar a...
Issue queue
SitemapWindows 11 Wi-Fi Limited Connectivity Troubleshooting Guide
Checklist to Fix npm Permission Denied Errors
How to Fix Docker 'Context Canceled' Build Error
Stop Windows Explorer Crash Loop in Windows 10/11
Fix npm run build Failed on Windows: Common Causes and Solutions
Resolve 0xc0000005 Explorer Crash – Step by Step
Troubleshooting Docker Nginx 502 Bad Gateway
Resolve Nginx 502 with Docker and PHP-FPM
How to Restore Missing Taskbar Icons After Uninstalling Programs
Docker Context Canceled: Fix with .dockerignore
How to Fix Nginx Upstream Connection Refused
Windows Taskbar Icons Missing? Try These Steps
Checklist to Fix npm Permission Denied Errors
How to Fix Docker 'Context Canceled' Build Error
Stop Windows Explorer Crash Loop in Windows 10/11
Fix npm run build Failed on Windows: Common Causes and Solutions
Resolve 0xc0000005 Explorer Crash – Step by Step
Troubleshooting Docker Nginx 502 Bad Gateway
Resolve Nginx 502 with Docker and PHP-FPM
How to Restore Missing Taskbar Icons After Uninstalling Programs
Docker Context Canceled: Fix with .dockerignore
How to Fix Nginx Upstream Connection Refused
Windows Taskbar Icons Missing? Try These Steps