Fix Nginx Upstream Connection Refused Socket Error
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 notesDocker Container Exits Immediately on Linux: Fixes
You start a Docker container, but it exits immediately. This is a common issue on Linux. The cont...
Fix Cloudflare 521 Error on Nginx: Step-by-Step Guide
If you see a Cloudflare 521 error, it means your origin server (the Nginx server behind Cloudflar...
Docker Network Not Found: Troubleshooting Checklist
When Docker complains network not found, containers can't start or connect. This...
Fix 'Permission Denied' in VS Code Terminal for Node.js
You're working in VS Code, run npm install or node app.js, and get ...
Cloudflare DNS Propagation Time: What to Expect and How to Check
After changing DNS records on Cloudflare, you might wonder how long it takes for the changes to t...
Issue queue
SitemapFixing Cloudflare 522 Errors Caused by Server Resource Exhaustion
Docker Nginx 502 Bad Gateway Fix
How to Restore Python IntelliSense in VS Code
Windows Explorer Keeps Restarting – Fix Guide
Fix Chrome Startup Crash After Reset
How to Recover Pruned Docker Networks
VS Code Source Control Ignores Subfolder Changes
How to Unstick Windows 11 Upgrade at 99%
Resolve Chrome Access Violation Error in Windows 10
VS Code Can't Save File: Permission Denied Troubleshooting
How to Fix Docker Pull Access Denied in Docker Desktop
How to Fix Firefox Secure Connection Failed Malware Warnings
Docker Nginx 502 Bad Gateway Fix
How to Restore Python IntelliSense in VS Code
Windows Explorer Keeps Restarting – Fix Guide
Fix Chrome Startup Crash After Reset
How to Recover Pruned Docker Networks
VS Code Source Control Ignores Subfolder Changes
How to Unstick Windows 11 Upgrade at 99%
Resolve Chrome Access Violation Error in Windows 10
VS Code Can't Save File: Permission Denied Troubleshooting
How to Fix Docker Pull Access Denied in Docker Desktop
How to Fix Firefox Secure Connection Failed Malware Warnings