User connection to a View workstation disconnects

I've setup a pool of workstations with 3 VM Workstations running Windows 7.

I've setup a test user to have access to one of the machines.

When I try to connect with the View Client it either just sits at 'Connection to the Desktop' or if it does connect it quickly disconnects after that.

Everything looks fine and this is a fresh install of everything.

Host A

- Server with Windows 2008 R2 running

    - Has all the vCentre, View Admin, Sql Servers etc.

Host B

- 3 Windows 7 workstations

Thanks.

Gary