zhizhu
Home / browser-issues / Fix Windows Security Login Loop and Sync Issues - Windows Defender DNS Error Permission Denied Fix-Troubleshoot Windows Security App Connection Problem

Fix Windows Security Login Loop and Sync Issues - Windows Defender DNS Error Permission Denied Fix-Troubleshoot Windows Security App Connection Problem

Updated 2026-06-13 20:17:50browser-issues
Fix Windows Security Login Loop and Sync Issues - Windows Defender DNS Error Permission Denied Fix-Troubleshoot Windows Security App Connection Problem
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.