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Fixing PowerShell DNS Errors After a Windows Update - Fix Outlook Authentication Failed in Office 365 Admin Center-How to Resolve 'Connection Refused' on Ping

Updated 2026-06-13 22:27:32windows-fixes
Fixing PowerShell DNS Errors After a Windows Update - Fix Outlook Authentication Failed in Office 365 Admin Center-How to Resolve 'Connection Refused' on Ping
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.