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 notesFix 'Python' Command Not Found on Windows 7
When you type python in Command Prompt on Windows 7 and get 'python' i...
Cloudflare 522 Error Checklist: Causes and Fixes
If you see a 522 Connection Timed Out error when visiting your site, Cloudflare ...
Fixing Cloudflare 521 Error: Enable Origin Pull Setup
If you see a Cloudflare 521 error, it means Cloudflare can't connect to your origin server. O...
Fixing Windows Update Error 0x80070005 and SFC Scan Issues
You try to run Windows Update but get error 0x80070005. When you run System File Checker (SFC /sc...
How to Fix Windows Update Error 0x80070005 Permission Denied
When Windows Update fails with error 0x80070005 and the message "Permission denied," it u...
Issue queue
SitemapFix Git Detached HEAD State in Visual Studio Code
Fix 'Bluetooth Hardware Not Found' on Windows 11
VS Code Permission Denied After Update Fix
Fix Cloudflare Wildcard Subdomain Not Working with WordPress
How to Fix Windows Update Service Not Running Due to Malwarebytes
Stop Nginx Redirect Loop: Step-by-Step Guide
How to Fix Git SSL Certificate 'Unable to Get Local Issuer'
Switch Node Version to Match Package Requirements
How to Fix VS Code Source Control Not Detecting Changes
How to Fix Git SSL Certificate Error on GitHub
Docker Desktop Engine Stopped: Fix Firewall Block
Cloudflare 521 Error: Causes and Solutions
Fix 'Bluetooth Hardware Not Found' on Windows 11
VS Code Permission Denied After Update Fix
Fix Cloudflare Wildcard Subdomain Not Working with WordPress
How to Fix Windows Update Service Not Running Due to Malwarebytes
Stop Nginx Redirect Loop: Step-by-Step Guide
How to Fix Git SSL Certificate 'Unable to Get Local Issuer'
Switch Node Version to Match Package Requirements
How to Fix VS Code Source Control Not Detecting Changes
How to Fix Git SSL Certificate Error on GitHub
Docker Desktop Engine Stopped: Fix Firewall Block
Cloudflare 521 Error: Causes and Solutions