HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\RCM\Licensing Core Value: LicensingMode (DWORD) — Same values as above.
The RDS CAL registry key is not a direct license file but rather a storage location for licensing-related configuration and, in certain legacy or specific scenarios, license token information. Its primary role is to inform the RDS server about the licensing mode (Per User or Per Device) and, on a license server, to track issued CALs. The most critical keys reside in the Windows Registry under: rds cal license registry key
Windows stores RDS licensing data in different registry paths depending on whether you are looking at the or the RD Session Host (Client) . 1. The RD Licensing Server Database Path in certain legacy or specific scenarios