zhizhu
Home / browser-issues / Fix Nginx 502 Bad Gateway Behind Cloudflare - Fix Windows Defender Not Running or Stuck Loading-Windows Security Not Opening on Mac: Fixes

Fix Nginx 502 Bad Gateway Behind Cloudflare - Fix Windows Defender Not Running or Stuck Loading-Windows Security Not Opening on Mac: Fixes

Updated 2026-06-13 16:23:35browser-issues
Fix Nginx 502 Bad Gateway Behind Cloudflare - Fix Windows Defender Not Running or Stuck Loading-Windows Security Not Opening on Mac: Fixes
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.