Fix Windows Defender Real-Time Protection Not Turning On After Update - Cloudflare 522 Error: Origin Server Response Time-How to Fix a Windows 11 Update Stuck at 0 Percent

Updated 2026-07-28 15:08:38backup-recovery
Fix Windows Defender Real-Time Protection Not Turning On After Update - Cloudflare 522 Error: Origin Server Response Time-How to Fix a Windows 11 Update Stuck at 0 Percent
Before changing system settings, save your work and note the exact error text so you can compare results after each step.

Extra verification checklist

  • Restart the affected app after changing permissions or configuration files.
  • Test the same workflow in a clean browser profile or a temporary user account.
  • Compare the result on another network if the error may be connection related.