After you have completed the preparation steps, you can install the Horizon Agent on the template VM.
There are three possible scenarios when installing the Horizon Agent:
Install on desktop (Windows 7, Windows 8, Windows 8.1, Windows 10)
Install on server (Windows Server 2008 R2, Windows Server 2012 R2) as Personal Desktop (Non-RDSH)
Install on server (Windows Server 2008 R2, Windows Server 2012 R2) as RDSH Role
If you have not installed the most recent version of the Horizon Agent, this can cause problems with creating RDS pools. In this case, when you create a new RDS pool, the system can allow you to select HTML Access (Blast) as a protocol, but this selection will not be applied to the pool even though it appears to have been applied successfully.