A new installation of Citrix Xen App on a windows 2008 X64 Server on a Windows 2000 Native Domain has trouble connecting Citrix Xen App to the network. The little connection icon at the bottom right of the screen in the tool bar is crossed out and red. When I try to connect to the current Xen App Server or to a domain controller it generates the message in the title above in the application log. I am wondering it this is a domain level issue as I tried to run the prescribed update from a domain controller as specified form the Xen App cd, but it did not appear to update the domain. Might I have to update the domain to 2003 first in order to take advantage of this option?