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Fix Windows Defender Login Loop in Windows 11 - Windows Search Index Migration Missing Results-Microsoft Store Error 0x80073cf6: Port Already Allocated Fix

Updated 2026-06-13 20:28:16developer-tools
Fix Windows Defender Login Loop in Windows 11 - Windows Search Index Migration Missing Results-Microsoft Store Error 0x80073cf6: Port Already Allocated Fix
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.