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Fix Nginx Config Test Failure After Adding SSL Certificate - How to Fix Cloudflare SSL Certificate Errors-How to Resolve Windows Security Proxy 504 Timeout

2026-06-13 15:49:57office-tools
Fix Nginx Config Test Failure After Adding SSL Certificate - How to Fix Cloudflare SSL Certificate Errors-How to Resolve Windows Security Proxy 504 Timeout

Final checklist

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