Allow certificates with no extended key usage certificate attribute

Supported OS tags: Windows10, Windows10RT, Windows11, Windows7, Windows8, Windows81, WindowsRT, WindowsRT81, WindowsServer2008, WindowsServer2012, WindowsServer2012R2, WindowsServer2016, WindowsVista

This policy setting lets you allow certificates without an Extended Key Usage (EKU) set to be used for logon. In versions of Windows prior to Windows Vista, smart card certificates that are used for logon require an enhanced key usage (EKU) extension with a smart card logon object identifier. This policy setting can be used to modify that restriction. If you enable this policy setting, certificates with the following attributes can also be used to log on with a smart card: - Certificates with no EKU - Certificates with an All Purpose EKU - Certificates with a Client Authentication EKU If you disable or do not configure this policy setting, only certificates that contain the smart card logon object identifier can be used to log on with a smart card.

This policy has no additional user input fields.

• Computer
  Allow ECC certificates to be used for logon and authentication

  At least Windows Server 2008 R2 or Windows 7
• Computer
  Allow Integrated Unblock screen to be displayed at the time of logon

  At least Windows Vista
• Computer
  Allow signature keys valid for Logon

  At least Windows Vista
• Computer
  Allow time invalid certificates

  At least Windows Vista
• Computer
  Allow user name hint

  At least Windows Vista
• Computer
  Configure root certificate clean up

  At least Windows Vista
• Computer
  Display string when smart card is blocked

  At least Windows Vista