System settings: Optional subsystems
This security setting determines which subsystems can optionally be started up to support your applications. With this security setting, you can specify as many subsystems to support your applications as your environment demands.
Default: POSIX.
Policy path:
Computer Configuration\Windows Settings\Local Policies\Security Options
Supported on:
At least Windows Vista, Windows Server 2003
Registry settings:
MACHINE\System\CurrentControlSet\Control\Session Manager\SubSystems\optional
Reboot required:
Yes