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How to Fix Nginx Upstream Connection Refused on Port 80 - Fix DNS Probe Finished NXDOMAIN Error on Mac-Docker Volume Permission Denied: Quick Fixes

Updated 2026-07-28 10:59:50office-tools
How to Fix Nginx Upstream Connection Refused on Port 80 - Fix DNS Probe Finished NXDOMAIN Error on Mac-Docker Volume Permission Denied: Quick Fixes
Likely symptom
Likely cause
Safe rollback

Verification route

  • Repeat the original action, not only a simplified test case.
  • Restart the app or reload the service after configuration changes.