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Fix Windows Security DNS Errors After a Windows Update - Add Exclusion for Network Drive in Windows Defender-How to Fix Windows Defender Authentication Failed

Updated 2026-06-14 09:27:51cloud-software
Fix Windows Security DNS Errors After a Windows Update - Add Exclusion for Network Drive in Windows Defender-How to Fix Windows Defender Authentication Failed
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.