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Windows Defender Real-Time Protection Rate Limit Error Fix - How to Resolve Cloudflare 521 Origin Unreachable-Chrome Cache Cleaning: Keep Your Passwords Safe

Updated 2026-06-15 21:10:19office-tools
Windows Defender Real-Time Protection Rate Limit Error Fix - How to Resolve Cloudflare 521 Origin Unreachable-Chrome Cache Cleaning: Keep Your Passwords Safe
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.

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