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Fix Windows 11 Wi-Fi No Internet by Disabling IPv6 - Troubleshoot Cloudflare 521 SSL Errors-Fix Windows Update Error 0x80070002

Updated 2026-07-28 11:45:03browser-issues
Fix Windows 11 Wi-Fi No Internet by Disabling IPv6 - Troubleshoot Cloudflare 521 SSL Errors-Fix Windows Update Error 0x80070002
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.