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Microsoft Teams Migration Missing Data: Troubleshooting Guide - Enable Windows Defender Threat Service Automatic Start-Windows Security App Missing in Windows 11: How to Restore It

Updated 2026-06-15 11:40:24developer-tools
Microsoft Teams Migration Missing Data: Troubleshooting Guide - Enable Windows Defender Threat Service Automatic Start-Windows Security App Missing in Windows 11: How to Restore It
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.