Install teamviewer on MS Hyper-v guest server


I have two virtual servers running as guests on MS Server 2012 R2,  I gone to the host, opened hyper-v manager, connected the servers and installed Teamviewer Host. Once I close the connection to the virtual machine the Teamviewer link in the Computers and Contacts list grays out.  What is the best way to install TeamViewer in a virtual invironment?