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Fix Nginx Upstream Connection Refused Error - Why Cloudflare DNS Isn't Updating on All Nameservers-How to Install a Cloudflare Origin Certificate in cPanel

Updated 2026-07-28 14:29:42office-tools
Fix Nginx Upstream Connection Refused Error - Why Cloudflare DNS Isn't Updating on All Nameservers-How to Install a Cloudflare Origin Certificate in cPanel
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.