How to Fix Nginx Upstream Connection Refused on Port 80
When nginx logs show "upstream connection refused" while connecting to port 80, it means ...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFixing Cloudflare SSL Full Strict Sync Issues
When you enable Cloudflare's SSL/TLS encryption mode to Full (Strict), your site may stop syn...
Fix Nginx Upstream Connection Refused & Upstream Not Found
When you see upstream connection refused or upstream not found in your ...
How to Fix Nginx 502 Bad Gateway in Docker
If you're running Nginx as a reverse proxy inside Docker and seeing a 502 Bad Gateway error, ...
How to Validate Nginx Configuration Before Reload
Reloading nginx with a broken configuration can take your site down. The safe way is to test the ...
Chrome Sync Not Working on Mac: Fixes That Actually Work
You open Chrome on your Mac, expecting your bookmarks and passwords to be there, but nothing sync...
Issue queue
SitemapDocker Prune Not Freeing Enough Space: Practical Fixes
Reinstall Microsoft Defender Windows Security
Resolving index.lock Exists Error in VS Code
Chrome Safe Mode Certificate Error Fix Guide
Troubleshoot Python Package Conflicts Post-Update
Cloudflare DNS Propagation Stuck for www Record
Configuring the Windows Update Service for Reliable Updates
How to Fix Nginx Configuration Errors in Docker
VS Code Git Changes Not Detected After Clone: Fixes
Cloudflare SSL Full Strict Permission Denied Fix
How to Fix Bluetooth Device Pairing Issues in Windows 11
Fix Windows Search Index Not Indexing New Files
Reinstall Microsoft Defender Windows Security
Resolving index.lock Exists Error in VS Code
Chrome Safe Mode Certificate Error Fix Guide
Troubleshoot Python Package Conflicts Post-Update
Cloudflare DNS Propagation Stuck for www Record
Configuring the Windows Update Service for Reliable Updates
How to Fix Nginx Configuration Errors in Docker
VS Code Git Changes Not Detected After Clone: Fixes
Cloudflare SSL Full Strict Permission Denied Fix
How to Fix Bluetooth Device Pairing Issues in Windows 11
Fix Windows Search Index Not Indexing New Files