Why can my application not connect to USB Dongle by AnywhereUSB\14 in a RDP session?

Why can my application not connect to USB Dongle by AnywhereUSB\14 when I am connected to a Windows 7 VM by RDP?

The Windows 7 VM is on Citrix XEN Server. When I connect by XEN center console the application can connect to the USB Dongle.

I’m using RDP 7.1 to connect from my laptop to the VM.

In both situations I can connect to the USB Dongle using the AnywhereUSB Remote Hub Configuration tool.

Anyone any idea what could cause this problem? Could this be a registry setting in Windows 7 that prevents that the application can find the AnywhereUSB?