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How to Fix Nginx Redirect Loop from HTTP to HTTPS - Troubleshoot Cloudflare Error 521-Windows Defender Real-Time Protection Service Not Running Fix

2026-07-28 19:22:35
How to Fix Nginx Redirect Loop from HTTP to HTTPS - Troubleshoot Cloudflare Error 521-Windows Defender Real-Time Protection Service Not Running Fix

Result check

  • Keep one change per test run so you know which step helped.
  • Undo temporary changes after the issue is confirmed.

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