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Chrome Profile Sync Not Working: Practical Fixes - Windows Defender Authentication Failed: Step-by-Step Checklist-How to Resolve Port Already Allocated Error Windows

Updated 2026-06-14 06:45:31browser-issues
Chrome Profile Sync Not Working: Practical Fixes - Windows Defender Authentication Failed: Step-by-Step Checklist-How to Resolve Port Already Allocated Error Windows
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.