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Fix Windows Security Stuck on Loading After Update - Fix Missing Windows Defender in Windows 11-How to Fix Nginx 502 Bad Gateway with Cloudflare

Updated 2026-06-13 20:23:08browser-issues
Fix Windows Security Stuck on Loading After Update - Fix Missing Windows Defender in Windows 11-How to Fix Nginx 502 Bad Gateway with Cloudflare
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.