Fixing Nginx 502 Bad Gateway in Docker: Practical Steps
You set up Nginx as a reverse proxy in Docker, but instead of your app you see a 502 Bad Gateway....
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesHow to Fix Git Unrelated Histories Error When Merging Branches
You try to merge two branches, and Git stops with: fatal: refusing to merge unrelated histo...
How to Fix 'Git Remote Origin Already Exists' Error When Cloning
You run git clone and get fatal: remote origin already exists. This err...
How to Fix Error 0x80070005 in Windows 11 (Access Denied)
If you see error 0x80070005 on Windows 11, it usually means the system or an app couldn't acc...
How to Fix Cloudflare Origin Certificate Invalid Error
If you see a Cloudflare origin certificate invalid error, your browser or server is rejecting the...
Fix Windows 11 Update Stuck at 0% – BITS Service Issues
You click 'Check for updates' in Windows 11, and it sits at 0% for minutes or hours. Ofte...
Issue queue
SitemapDocker Container Exits Immediately with Exit Code 137
How to Add Python to PATH on Windows
Check Docker Disk Usage: Commands and Cleanup
How to Fix Git SSL Certificate Problem: Unable to Get Local Issuer
Reinstall Chrome to Fix Status Access Violation
Troubleshooting Cloudflare SSL Full Strict Failures After Update
npm Permission Denied: How to Fix Global Packages
Nginx Permission Denied Error Log Location and Fix
How to Give VS Code Write Access to Files
Cloudflare 522 Error: Server Resource Exhaustion Solutions
Windows Update 0x800f081f: Causes and Fixes
VSCode Node.js IntelliSense Not Working Fix
How to Add Python to PATH on Windows
Check Docker Disk Usage: Commands and Cleanup
How to Fix Git SSL Certificate Problem: Unable to Get Local Issuer
Reinstall Chrome to Fix Status Access Violation
Troubleshooting Cloudflare SSL Full Strict Failures After Update
npm Permission Denied: How to Fix Global Packages
Nginx Permission Denied Error Log Location and Fix
How to Give VS Code Write Access to Files
Cloudflare 522 Error: Server Resource Exhaustion Solutions
Windows Update 0x800f081f: Causes and Fixes
VSCode Node.js IntelliSense Not Working Fix