Fix Docker Nginx 502 Bad Gateway with MySQL
You have a Dockerized web app behind Nginx, and you're seeing a 502 Bad Gateway error. The ap...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix net::ERR_CERT_AUTHORITY_INVALID in Chrome on Android
When browsing on Chrome for Android, you might encounter the error net::ERR_CERT_AUTHORITY_...
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, ...
Fix Nginx Upstream Connection Refused in Docker
You have Nginx running, either on the host or in a container, proxying to another Docker containe...
How to Fix an Nginx Redirect Loop: Step-by-Step
You load a site and the browser keeps spinning—eventually showing 'redirect loop' or '...
Docker Network Not Found: Troubleshooting Checklist
When Docker complains network not found, containers can't start or connect. This...
Issue queue
SitemapCloudflare Origin Certificate Installation Guide
How to Fix Windows 11 BSOD After Update with DISM
Windows 11 Loses Internet After Sleep – How to Fix
How to Fix Cloudflare Error 521: Web Server Is Down
Chrome Sync Error Windows 10: Step-by-Step Fix
How to Fix pip Externally Managed Environment Error on Linux
Fix Git Clone Timeout on macOS: Step-by-Step Guide
Troubleshoot Windows Cannot Access Network Share
Resolve VS Code Git Authentication Failed on GitHub
Troubleshooting Docker Port Binding Failures
Resolve 'python' Not Recognized in Windows Terminal
Guide to Clearing pnpm Cache on Any OS
How to Fix Windows 11 BSOD After Update with DISM
Windows 11 Loses Internet After Sleep – How to Fix
How to Fix Cloudflare Error 521: Web Server Is Down
Chrome Sync Error Windows 10: Step-by-Step Fix
How to Fix pip Externally Managed Environment Error on Linux
Fix Git Clone Timeout on macOS: Step-by-Step Guide
Troubleshoot Windows Cannot Access Network Share
Resolve VS Code Git Authentication Failed on GitHub
Troubleshooting Docker Port Binding Failures
Resolve 'python' Not Recognized in Windows Terminal
Guide to Clearing pnpm Cache on Any OS