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How to Enable Windows Defender Real-Time Protection in Windows 10 - Resolve 521 Web Server Down with Firewall Changes-How to Stop Cloudflare SSL Redirect Loop

Updated 2026-07-28 14:07:38cloud-software
How to Enable Windows Defender Real-Time Protection in Windows 10 - Resolve 521 Web Server Down with Firewall Changes-How to Stop Cloudflare SSL Redirect Loop
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.

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