If nothing returns, the default ( 1 ) is active.
The key is per Domain Controller , not a domain-wide GPO setting. You must configure it on each DC. strongcertificatebindingenforcement registry key location
Without proper binding enforcement, an attacker with a valid certificate could request a Kerberos ticket for another user (a "bronze bit"-style attack). Strong binding ensures the certificate’s subject/issuer match the Kerberos principal requesting the ticket. If nothing returns, the default ( 1 ) is active
New-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Services\Kdc" -Name "StrongCertificateBindingEnforcement" -PropertyType DWORD -Value 1 -Force Use code with caution. Value Data Breakdown Without proper binding enforcement, an attacker with a
The StrongCertificateBindingEnforcement key is not present by default. It must be manually added to the registry on all Domain Controllers.
This setting, introduced by Microsoft, controls how strictly the Domain Controller enforces certificate-based authentication binding. Getting it wrong can break legacy smart card logins; getting it right closes critical elevation-of-privilege vulnerabilities (CVE-2020-17049).
For a comprehensive guide on implementing this change, check the official Microsoft support page on KB5014754 . To help you prepare, are you looking to: for the first time?