Fix Nginx 502 Bad Gateway with Docker Multiple Containers
If you run Nginx as a reverse proxy in front of multiple Docker containers, a 502 Bad Gateway err...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix npm install Permission Denied After Node Update
After updating Node.js, you might see a permission denied error when running npm install
Windows 11 Wi-Fi Connected but No Internet: Step-by-Step Fix
You're connected to Wi-Fi, but websites won't load and apps show no internet. This is a c...
Fix Docker Pull Access Denied on Windows 10
When you run docker pull on Windows 10 and see access denied, the pull ...
Fix Windows Defender Real-Time Protection Permission Denied
When you try to turn on or off Windows Defender real-time protection, you might see a "Permis...
Fix Nginx 'upstream connection refused' When Talking to PHP-FPM
You're seeing upstream connection refused in your Nginx error log, and your site...
Issue queue
SitemapCloudflare 521 Error Apache Troubleshooting Steps
Fix Windows Search Indexing: Step-by-Step Checklist
Nginx Cloudflare Redirect Loop Troubleshooting
Fix Port Already in Use Error in Docker Compose
Chrome Extensions Not Showing? Common Causes Explained
How to Fix Git Push Rejected Non-Fast-Forward Upstream
DNS Probe Finished NXDOMAIN: Troubleshooting Checklist
Troubleshoot Nginx SSL Redirect Loop
Overlay Network Not Found in Docker Swarm
Nginx Static File Permission Error Troubleshooting
Docker Desktop Firewall Block: Engine Stopped Troubleshooting
Git Merge --allow-unrelated-histories vs Rebase Guide
Fix Windows Search Indexing: Step-by-Step Checklist
Nginx Cloudflare Redirect Loop Troubleshooting
Fix Port Already in Use Error in Docker Compose
Chrome Extensions Not Showing? Common Causes Explained
How to Fix Git Push Rejected Non-Fast-Forward Upstream
DNS Probe Finished NXDOMAIN: Troubleshooting Checklist
Troubleshoot Nginx SSL Redirect Loop
Overlay Network Not Found in Docker Swarm
Nginx Static File Permission Error Troubleshooting
Docker Desktop Firewall Block: Engine Stopped Troubleshooting
Git Merge --allow-unrelated-histories vs Rebase Guide