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Fix Chrome Authentication Failed Certificate Error - How to Fix Command Prompt Port Already Allocated Error-How to Resolve Cloudflare 521 Error Post-Update

Updated 2026-06-14 03:07:05macos-help
Fix Chrome Authentication Failed Certificate Error - How to Fix Command Prompt Port Already Allocated Error-How to Resolve Cloudflare 521 Error Post-Update
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.