Fixing Nginx 502 Bad Gateway with Docker and Load Balancers
If you're running Nginx as a reverse proxy or load balancer in a Docker setup, a 502 Bad Gate...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesGit Push Rejected Non Fast Forward: How to Fix
You run git push and see: ! [rejected] main -> main (non-fast-forward)
How to Fix Nginx Redirect Loop 302 Errors
You're seeing a 302 redirect loop in Nginx — the browser keeps bouncing between URLs until it...
Fix DNS Probe Finished NXDOMAIN on Router: Step-by-Step
You're browsing and suddenly Chrome shows 'DNS_PROBE_FINISHED_NXDOMAIN'. This means y...
How to Fix Docker Pull Unauthorized Access Denied
When you run docker pull and get an "unauthorized: access denied" error, Doc...
Fix Nginx Upstream Connection Refused & Upstream Not Found
When you see upstream connection refused or upstream not found in your ...
Issue queue
SitemapHow to Validate Nginx Configuration Before Reload
Chrome Access Violation Error – Startup Fixes
Windows 11 Upgrade Stuck at 99%? Here's the Fix
Resolve VS Code Update Permission Errors
Resolving Docker Context Canceled and Permission Denied Errors
How to Enable Windows Update Service via Group Policy
How to Fix Nginx 502 Upstream Connection Refused
Docker Network 502 Error Troubleshooting
How to Restore C++ IntelliSense in Visual Studio Code
Reset Windows Security App Settings Guide
How to Resolve npm Global Install Permission Issues
Git Detached HEAD Commit Recovery Guide
Chrome Access Violation Error – Startup Fixes
Windows 11 Upgrade Stuck at 99%? Here's the Fix
Resolve VS Code Update Permission Errors
Resolving Docker Context Canceled and Permission Denied Errors
How to Enable Windows Update Service via Group Policy
How to Fix Nginx 502 Upstream Connection Refused
Docker Network 502 Error Troubleshooting
How to Restore C++ IntelliSense in Visual Studio Code
Reset Windows Security App Settings Guide
How to Resolve npm Global Install Permission Issues
Git Detached HEAD Commit Recovery Guide