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Home / windows-fixes / How to Fix Windows Defender Error 0x800704ec - How to Reset Windows Security Settings to Default-Windows Defender Firewall Blocking Connection: Troubleshooting Guide

How to Fix Windows Defender Error 0x800704ec - How to Reset Windows Security Settings to Default-Windows Defender Firewall Blocking Connection: Troubleshooting Guide

Updated 2026-06-13 16:42:50windows-fixes
How to Fix Windows Defender Error 0x800704ec - How to Reset Windows Security Settings to Default-Windows Defender Firewall Blocking Connection: Troubleshooting 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.