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Home / / How to Fix Cloudflare Error 525: SSL Handshake Failed - Windows Defender File Locked? Here's How to Fix It-Renew Windows Update Token via Command Line: Step-by-Step

How to Fix Cloudflare Error 525: SSL Handshake Failed - Windows Defender File Locked? Here's How to Fix It-Renew Windows Update Token via Command Line: Step-by-Step

2026-06-13 13:21:25
How to Fix Cloudflare Error 525: SSL Handshake Failed - Windows Defender File Locked? Here's How to Fix It-Renew Windows Update Token via Command Line: Step-by-Step

Final checklist

  • Confirm that the same symptom is gone after a restart or refresh.
  • Keep the smallest working change and undo temporary diagnostic settings.