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Fix Microsoft Teams Error Code cxa20001 - How to Fix Windows Defender DNS Error on Windows 11-BitLocker Recovery After BIOS Update

Updated 2026-06-14 00:00:36developer-tools
Fix Microsoft Teams Error Code cxa20001 - How to Fix Windows Defender DNS Error on Windows 11-BitLocker Recovery After BIOS 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.