The License server security group machine setting should be configured correctly. This policy setting allows you to specify the RD Session Host servers to which a Remote Desktop license server will offer Remote Desktop Services client access licenses (RDS CALs). You can use this policy setting to control which RD Session Host servers are issued RDS CALs by the Remote Desktop license server. By default, a license server issues an RDS CAL to any RD Session Host server that requests one. If you enable this policy setting and this policy setting is applied to a Remote Desktop license server, the license server will only respond to RDS CAL requests from RD Session Host servers whose computer accounts are a member of the Terminal Server Computers group on the license server. By default, the Terminal Server Computers group is empty. If you disable or do not configure this policy setting, the Remote Desktop license server issues an RDS CAL to any RD Session Host server that requests one. The Terminal Server Computers group is not deleted or changed in any way by disabling or not configuring this policy setting. Fix: (1) GPO: Computer Configuration\Administrative Templates\Windows Components\Remote Desktop Services\RD Licensing\License server security group (2) KEY: HKLM\Software\Policies\Microsoft\Windows NT\Terminal Services\\fSecureLicensing