Fix Nginx Upstream Connection Refused in Proxy Pass
When Nginx returns a 502 Bad Gateway or logs upstream connection refused
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix Explorer.exe Keeps Restarting in Windows 10
If your File Explorer (explorer.exe) keeps restarting on Windows 10, you'll see the taskbar a...
Fix Nginx Configuration Test Failure in Docker
When you run nginx -t inside a Docker container and get an error, the container usua...
Docker Network Not Found When Running Container: Fixes
When you try to run a Docker container with --network and get an error like ne...
Docker Network Not Found After Container Restart: Fixes
You restart a Docker container and get an error like network <name> not found....
Resolving Git Merge Conflicts After Cherry-Pick
Cherry-picking is a convenient way to apply specific commits from one branch to another. But when...
Issue queue
SitemapWindows 11 Update Blue Screen: Recovery Environment Fixes
Stop Chrome from Freezing on Startup on Your Mac
Fix Windows 11 BSOD After Cumulative Update
Cloudflare 522 Error: Origin Server Response Time
Windows Defender Real-Time Protection Keeps Turning Off: Fixes
How to Fix Shared Folder Access Credential Errors in Windows
Fix ENOENT Error: package.json Not Found in React App
Nginx Permission Denied Troubleshooting Guide
Cloudflare Wildcard DNS Record Setup Guide
Troubleshooting npm ERR! ENOENT package.json After Clone
How to Check if Cloudflare DNS Propagation Is Complete
Docker Compose PostgreSQL Port Conflict
Stop Chrome from Freezing on Startup on Your Mac
Fix Windows 11 BSOD After Cumulative Update
Cloudflare 522 Error: Origin Server Response Time
Windows Defender Real-Time Protection Keeps Turning Off: Fixes
How to Fix Shared Folder Access Credential Errors in Windows
Fix ENOENT Error: package.json Not Found in React App
Nginx Permission Denied Troubleshooting Guide
Cloudflare Wildcard DNS Record Setup Guide
Troubleshooting npm ERR! ENOENT package.json After Clone
How to Check if Cloudflare DNS Propagation Is Complete
Docker Compose PostgreSQL Port Conflict