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Fix Nginx Upstream Connection Refused Error - Troubleshoot Firefox SSL Error Caused by Antivirus-Resolving Git SSL Certificate Issues on Corporate Networks

2026-07-28 11:51:27
Fix Nginx Upstream Connection Refused Error - Troubleshoot Firefox SSL Error Caused by Antivirus-Resolving Git SSL Certificate Issues on Corporate Networks

Result check

  • Keep one change per test run so you know which step helped.
  • Undo temporary changes after the issue is confirmed.

Next references

Setting Timeouts on Python Requests GET: A Practical GuideHow to Fix Nginx 'Upstream Connection Refused' ErrorFix Docker Nginx 502 Bad Gateway After RestartFix node-sass Build Failed: node-gyp Rebuild ErrorFix Python Memory Errors When Processing Large FilesHow to Fix Nginx 502 Bad Gateway in Docker Compose