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Fix Nginx Upstream Connection Refused Error - Nginx Upstream Socket Permission Denied Guide-Fix Nginx Upstream Connection Refused on Port 80

2026-07-28 09:59:39cloud-software
Fix Nginx Upstream Connection Refused Error - Nginx Upstream Socket Permission Denied Guide-Fix Nginx Upstream Connection Refused on Port 80

Final checklist

  • Confirm that the same symptom is gone after a restart or refresh.
  • Keep the smallest working change and undo temporary diagnostic settings.

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