SSL VPN RDP Bookmark Does Nothing

I've got some Chromebook users that need to use SSL VPN. I figure to have them login to the Web SSL Portal and use Bookmarks to RDP into Terminal Server or their Workstation. 

When I setup a RDP Connection Test to Terminal Server, just a white screen comes up. Nothing else happens. This is with Chrome and IE 32-bit. 

RDP Connection Test Settings:

Type: RDP 

Host: IP of Terminal Server and tried FQDN as well

Screen Width and Height: Left at default 

Username: domain\username & Username (samAccountName)

Password: correct password used

Full Screen: Checked or Unchecked

Only a white screen will come up. Nothing else happens. Trying to figure if there any requirements like Java, ActiveX, etc.