Hi Dejan,  You do have to install the Microsoft RDSH role on to your Windows 2008/2012 server prior to installing the vWorkspace Session Host role. The vWorkspace installer package will not do this for you.  Kind Regards David
Do we have to have the Microsoft Remote Desktop services farm installed and functioning before we install vWorkspace 8.0? The reason I'm asking is, when I tried to install vWorkspace Session Host role on Windows Server 2012, it informed me that I need to have Microsoft Remote Desktop Services Session Host installed prior to the vW install. Would not vWorkspace install and enable all the roles on its own? 
vWorkspace 8.0 on Server 2012