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How to Fix Cloudflare Error 525 SSL Handshake Failed - Windows Security Blank Screen Fix: Reset the App-Resolve Windows Defender 502 Bad Gateway with These Steps

2026-06-13 15:04:21
How to Fix Cloudflare Error 525 SSL Handshake Failed - Windows Security Blank Screen Fix: Reset the App-Resolve Windows Defender 502 Bad Gateway with These Steps

Result check

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