This recipe will show you how to recover your RDS CALs to a new RD License server when you cannot restore your original server or when you simply need to transfer your licenses to a new RD License server.
In order to automatically rebuild the RD Licensing database, the computer running the RD Licensing Manager needs to have internet access (TCP port 443). The RD License server itself does not require internet access, only the computer running the management console.
Also check if your RD License Server is configured for automatic connection (recommended) through the properties of your RD License Server in the RD License Manager.
To automatically recover your licenses ...