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Fix Windows Defender Access Denied Error on Startup - Windows Update Error 0x80070643 Fix Guide-Fix Redirect Loop with Cloudflare Flexible SSL

Updated 2026-06-13 15:17:04cloud-software
Fix Windows Defender Access Denied Error on Startup - Windows Update Error 0x80070643 Fix Guide-Fix Redirect Loop with Cloudflare Flexible SSL
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.