Before starting, you must find your proof of purchase. Depending on how you bought the licenses, your credentials will be in one of the following locations:
A Remote Desktop Services (RDS) Client Access License (CAL) is a requirement for every user or device connecting to a Windows Server session host. Unlike standard software, you do not "download" a license file in the traditional sense; instead, you activate your license server and install CALs using a product key or agreement number. download rds cal license
If you bought a physical or digital retail pack, you will have a 25-character product key. Before starting, you must find your proof of purchase