A few things you will sure notice after installing Citrix Presentation server 4.0 X64. The first thing you will notice is the Citrix quick launch bar. It looks a lot smaller than in the 32bit version, this is because some icons are missing. When you look over the available application on the task bar you’ll find that the Citrix Connection Configuration tool is one of the missing icons.
When opening the Terminal Services Configuration Utility, you will see that the ICA protocol is added to the connections, where in the 32bit this was only RDP. Looking closer at the properties of the RDP connection, brings up many similar tabs as in the old RDP connection setting, but you’ll sure to notice a new tab called “Citrix Settings”.
This tab does require a closer look. As you see the desktop is restricted to administrators only, and yes this means that a user even part of the remote desktop user group cannot access the desktop through terminal services. So if you want to publish a desktop using RDP to your users, be sure to uncheck this checkbox. Otherwise only administrators are able to logon to the remote desktop of that server.
When looking at the properties of the ICA connection, be sure to check out the ICA Settings tab. Also this tab restricts access to the desktop to only administrators. So again if you want to provide a desktop using the ICA protocol, you’ll need to uncheck this and the one in the RDP settings tab.