Fixing Nginx Upstream Connection Refused on Port 443
You see "upstream connection refused" in your Nginx error log when proxying requests to p...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix VS Code Permission Denied When Not Admin
You try to save a file or install an extension in VS Code, and get a "permission denied" ...
Docker Compose Multiple Environment Files Not Merging? Fix Here
You have multiple .env files for different environments (e.g., .env.dev...
Fix Python Permission Denied When Installing Packages on Mac
If you see a 'permission denied' error when running pip install somepackage ...
Cloudflare 522 Error After Server Migration: Fixes That Work
If you've just migrated your website to a new server and now see a Cloudflare 522 error (conn...
Docker Compose Env Variable Not Available in Container: Fix
You define an environment variable in your docker-compose.yml file, but when you run...
Issue queue
SitemapWindows 11 Blue Screen After Update Uninstall Fix
Resolve Docker Compose Env Variable Substitution Errors
Fix Nginx 'upstream connection refused' When Talking to PHP-FPM
Troubleshooting SSH Permission Denied Error in VS Code
Git Clone Connection Timed Out: Causes and Fixes
Windows 11 Bluetooth Not Detecting Devices: How to Fix
Windows 11 Bluetooth Reset Guide
Chrome Certificate Authority Invalid Fix for Windows
Fix 'docker build context canceled no space left on device'
Docker Desktop Engine Won't Start on Windows
Fix Bluetooth Problems in Windows 11
Troubleshoot Nginx SSL Redirect Loop
Resolve Docker Compose Env Variable Substitution Errors
Fix Nginx 'upstream connection refused' When Talking to PHP-FPM
Troubleshooting SSH Permission Denied Error in VS Code
Git Clone Connection Timed Out: Causes and Fixes
Windows 11 Bluetooth Not Detecting Devices: How to Fix
Windows 11 Bluetooth Reset Guide
Chrome Certificate Authority Invalid Fix for Windows
Fix 'docker build context canceled no space left on device'
Docker Desktop Engine Won't Start on Windows
Fix Bluetooth Problems in Windows 11
Troubleshoot Nginx SSL Redirect Loop