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Fix Outlook Data File Access Permissions Error - Windows Store Error 0x80073cf9: How to Fix Installation Failures-Windows Defender Hanging: Clean Reinstall Guide

Updated 2026-06-13 15:20:19macos-help
Fix Outlook Data File Access Permissions Error - Windows Store Error 0x80073cf9: How to Fix Installation Failures-Windows Defender Hanging: Clean Reinstall Guide
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.