When you configure an RDS session host to use a specific license server (either manually or via Group Policy), the server saves that information here:
Note: Always restart the server after making registry changes to apply new licensing configurations. Guidance for troubleshooting RDS Licensing - Windows Server rds cal license registry key
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\RCM When you configure an RDS session host to
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\TermService\Parameters\LicenseKeyStore rds cal license registry key
Settings in SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services take precedence.
She leaned over and opened regedit . They dove into the belly of the machine, navigating the hive: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\RCM\Licensing Core