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Fixing Cloudflare 521 Error After Server Restart - Prevent Hanging Requests in Python with Total Timeout-How to Reset Windows Defender Real-Time Protection

Updated 2026-07-28 11:38:41browser-issues
Fixing Cloudflare 521 Error After Server Restart - Prevent Hanging Requests in Python with Total Timeout-How to Reset Windows Defender Real-Time Protection
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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