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Fix Windows Defender Sync Issues with Microsoft 365 - Windows Security Cache Clear Error: Permission Denied Fix-How to Fix Nginx 404 Errors

Updated 2026-06-13 14:28:06windows-fixes
Fix Windows Defender Sync Issues with Microsoft 365 - Windows Security Cache Clear Error: Permission Denied Fix-How to Fix Nginx 404 Errors
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.