What if the license server is already licensed, but you need the key for a new server? The RD Licensing Manager tool can show you the key pack IDs of licenses already installed.
Depending on how you bought your licenses, your "key" is likely hidden in one of three places: The Microsoft Admin Portals : Most modern business licenses are found in the Microsoft 365 Admin Center Billing > Your products Volume Licensing Service Center (VLSC) how to find rds license key
Note: This typically pulls the OS key, not the specific RDS CAL pack keys, but it’s a helpful starting point if you’re doing a full server audit. 5. Contact Your Microsoft Partner or Reseller What if the license server is already licensed,