Each License00x entry contains a separate CAL. Entries are contained in sub key named License00x, where X is a numerical ID beginning with 0. Is used to store the terminal services CAL allocated from the license server. This entry is made when clients are allocated both temporary CALs and permanent licenses. When a client is allocated an RDS CAL from the license server, this HardwareID is recorded in the licensing database to associate the client with the CAL. This ID uniquely identifies the machine to the license server. Stores a Random 20-byte identifier specific to the client machine and is generated automatically by Windows. The MSLicensing key contains two sub-keys used to store both unique client-specific information and any license certificates obtained from license servers. The license server loses one of its licenses from its inventory, and the client device has the digital certificate that it can present to any RDS Host on future connections.Ĭlients store their license under the key: Once a client device connects to an RDS Host, an RDS CAL digital certificate is transferred from the license server to the client device. The digital certificate is an actual certificate copied to the client device. That certificate is saved in the below location on Licensing server: When a client device receives an RDS Device CAL from an RDS Host, it receives it in the form of a digital certificate from a license server. If no license tokens are available, the temporary RDS CAL token will continue to function for 90 days. The next time the client connects, an attempt is made to upgrade the validated temporary RDS CAL token to a full RDS CAL token. After the user has logged into the session, the RDS server instructs the License Server to mark the issued temporary RDS CAL token as being validated. If an unlicensed client connects to a Remote Desktop Server for the first time, the Remote Desktop Licensing Server issues the client a temporary RDS Client Access License (CAL).
Today I will be discussing an issue where multiple per device Remote Desktop Services CALS are issued to the same device.īefore we dive into this topic, I would like to recall the below facts about RDS Per Device Licensing. Hello AskPerf! Ishu Sharma here again from Microsoft Performance team.
First published on TECHNET on May 08, 2015
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