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 notesDocker Container Exits Immediately with Exit Code 137
You start a Docker container, and it exits almost immediately with exit code 137. This usually me...
Fix Nginx Configuration Test Failure for Upstream Directive
When you run nginx -t and get an error involving the upstream directive...
Nginx Upstream Connection Refused: Diagnosis and Fixes
When Nginx returns a 502 Bad Gateway or logs "upstream connection refused", it means Ngin...
How to Fix Windows Update Service Disabled
If your Windows Update service is disabled, you'll likely see error messages like "Window...
Chrome Profile Sync Not Working After Update: Fixes
After a Chrome update, you might see sync paused or error messages. Your bookmarks, passwords, or...
Issue queue
SitemapHow to Resolve Firefox Secure Connection Failed
Fix Chrome Crashing Immediately on Open
Python Requests Connection Timeout Guide
Reset Network Settings in Windows 11 When You Have No Internet
VS Code mkdir Permission Denied Fix
Windows 11 Update Stuck at 0% Permission Denied Fix
Git Push Rejected: Unrelated Histories Fix
How to Fix Node.js and npm Version Mismatch
Fix pip Externally Managed Environment Error on Linux
How to Fix npm Install Permission Denied on Mac
npm Permission Denied on Lockfile or node_modules After Yarn
Troubleshooting Docker Port Binding Failures
Fix Chrome Crashing Immediately on Open
Python Requests Connection Timeout Guide
Reset Network Settings in Windows 11 When You Have No Internet
VS Code mkdir Permission Denied Fix
Windows 11 Update Stuck at 0% Permission Denied Fix
Git Push Rejected: Unrelated Histories Fix
How to Fix Node.js and npm Version Mismatch
Fix pip Externally Managed Environment Error on Linux
How to Fix npm Install Permission Denied on Mac
npm Permission Denied on Lockfile or node_modules After Yarn
Troubleshooting Docker Port Binding Failures