Fix Nginx 502 Bad Gateway: Upstream Connection Refused
If you're seeing a 502 Bad Gateway error with "upstream connection refused" in your N...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix Nginx 403 Forbidden: Permission Denied Errors
You're trying to access a site served by nginx, but you get a 403 Forbidden ...
DNS Probe Finished NXDOMAIN: Meaning and Fixes
You're trying to visit a website but Chrome shows "DNS_PROBE_FINISHED_NXDOMAIN". This...
How to Fix Cloudflare 522 Error from Plugin Conflicts
If you're seeing a Cloudflare 522 error, it usually means the connection between Cloudflare a...
Fix Cloudflare Wildcard Subdomain Issues After SSL Change
If your wildcard subdomains (e.g., *.example.com) stop working after you change SSL/TLS settings ...
How to Fix Remote Desktop Connection Timed Out Error
When you see "Remote Desktop Connection timed out" after attempting to connect to a remot...
Issue queue
SitemapFix Windows 11 Blue Screen After Update Using Compatibility Mode
VSCode Source Control Not Showing Changes Fix
VS Code Source Control Not Detecting Changes on Mac: Fixes
Cloudflare DNS Propagation: How to Check and Fix Delays
Chrome Sync Not Working After Password Change: Fixes
How to Handle Python Dependency Mismatches
Firefox PR_CONNECT_RESET_ERROR Antivirus Fix
npm Build Failed on Mac: Troubleshooting Guide
How to Fix Cloudflare 522 Error: Step-by-Step Support Guide
Working Around the Externally Managed Environment pip Error
Troubleshooting VS Code Java Language Server Issues
Nginx 502 Bad Gateway: Upstream Connection Refused Fix
VSCode Source Control Not Showing Changes Fix
VS Code Source Control Not Detecting Changes on Mac: Fixes
Cloudflare DNS Propagation: How to Check and Fix Delays
Chrome Sync Not Working After Password Change: Fixes
How to Handle Python Dependency Mismatches
Firefox PR_CONNECT_RESET_ERROR Antivirus Fix
npm Build Failed on Mac: Troubleshooting Guide
How to Fix Cloudflare 522 Error: Step-by-Step Support Guide
Working Around the Externally Managed Environment pip Error
Troubleshooting VS Code Java Language Server Issues
Nginx 502 Bad Gateway: Upstream Connection Refused Fix