Any RDS license server can host licenses from all previous versions of Remote Desktop Services and the current version of Remote Desktop Services. For example, a Windows Server 2016 RDS license server can host licenses from all previous versions of RDS, while a Windows Server 2012 R2 RDS license server can only host licenses up to Windows.
The TS01 server has all the other RDS roles installed. I Installed the licenses on DC01 and they show 0 Available and 5 issues even though nobody has logged into the server I also pointed the TS01 server to the license server (DC01) but I get this error when adding it: The license server specified is not valid. Verify the server name and specify a valid server name before saving the settings. When I run the RD License Diagnoser from either server, I get the below error. Does anyone know what I'm missing? Is the 2012 server really looking for 2008 RDS CALs???