Product Information "Windows Server 2022 RDS - 10 User CALS"
Every user and every device that connects to a remote Desktop session host requires CAL (Client Access License) licenses. Use the Remote Desktop licensing service to install, release, and track the CAL licenses for Remote Desktop Services.
When a user or a device connects to a Remote Desktop Session Host server, the latter determines whether a Remote Desktop Services CAL license is needed. The Remote Desktop Session Host server then requests a Remote Desktop Services CAL license from the Remote Desktop Licensing server. If an appropriate Remote Desktop Services CAL license is available in a licensing server, the license is issued to the client to allow the connection to the Remote Desktop Session Host server and from there to the desktop or apps they are trying to use.
Use the following information to learn about the operation of Remote Desktop Services CAL licenses, and to deploy and manage the licenses:
Granting CAL (Client Access License) for the distribution of Remote Desktop Services
Information on the CAL Remote Desktop Services licensing model
Compatibility of Remote Desktop Services CAL License Versions
Information on the CAL licensing model for Remote Desktop Services
Two types of Remote Desktop Services licenses are available:
CAL Licenses for Remote Desktop Services Device
CAL Licenses for Remote Desktop Services User