I am getting the following error " The following requirements should be met for the RD Session Host Servers in the collection"

Hello All,

I have a windows server 2012 R2 build 9600, I have installed all the required Terminal Services and configured a Session based collection. I have verified that all services are running including the RD Session Host  and I am using an Administrator account for the set up. All the terminal services are installed on a single server, Domain Controller is installed on a separate one.  

When I try to add RemoteApp Application to the collection i get the error bellow::

Can any one help solve this problem, I tried to trouble shoot  this with out success.

Thank you.

Ron