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Outlook Version Mismatch: Fix Email Sync Issues - Fix 'Connection Refused' Error on localhost in CMD-How to Fix 502 Bad Gateway Activation in Windows

Updated 2026-06-13 23:47:02browser-issues
Outlook Version Mismatch: Fix Email Sync Issues - Fix 'Connection Refused' Error on localhost in CMD-How to Fix 502 Bad Gateway Activation in 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.