If necessary, you can download the Horizon Client from the Desktop Portal.

If a user launches the DaaS User Portal and then attempts to connect to a desktop using the Blast Extreme or PCoIP protocol, the Horizon Client is launched and the user is seamlessly signed in. The first time a user launches a PCoIP connection from the Desktop Portal a dialog displays containing a link for downloading the Horizon Client.

If you launch the DaaS User Portal and then attempt to connect to a desktop using the HTML Access (Blast) protocol, you are informed that you need to download the Horizon Client by clicking the link in the information dialog. First enable pop-ups in your browser, then initiate an HTML Access connection.