The remote desktop and the client components that you can upgrade include
Horizon Client for any of the supported desktop and mobile client platforms, thin clients provided by VMware partners, and the View Agent, which runs inside the operating systems of remote desktops and Microsoft RDS hosts.
Upgrade RDS Hosts That Provide Session-Based Desktops On RDS hosts with Windows Server 2008 R2 or a later operating system, you can upgrade the View Agent software and edit pool settings so that the RDS host can provide remote desktops and remote Windows-based applications.
Upgrade View Agent The strategy for upgrading View Agent depends on the type of desktop source.
Upgrade View Composer Desktop Pools Part of the final phase of a View upgrade includes upgrading View Composer desktop pools.
Tasks for Upgrading Desktop Pools to Use Space Reclamation Starting with vSphere 5.1, View creates linked-clone virtual machines in an efficient disk format that allows ESXi hosts to reclaim unused disk space in the linked clones. Upgrading pools to use this feature involves changing settings in vCenter Server, View LDAP, and pool settings and then recomposing the pool.
Tasks for Upgrading Desktop Pools to Use a Virtual SAN Datastore Starting with vSphere 5.5 Update 1, you can use the Virtual SAN feature for high-performance storage and policy-based management. Upgrading pools to use this feature involves changing a pool setting and then rebalancing the pool.
Upgrade the Client Application The final phase of a View upgrade includes upgrading to the latest version of Horizon Client and upgrading the firmware on thin client devices if you use them.
Configure the VMware Horizon Web Portal Page for End Users You can configure this Web page to show or hide the icon for downloading Horizon Client or the icon for connecting to a remote desktop through HTML Access. You can also configure other links on this page.