When trying to setup some new thin clients using Windows Embedded 8.1 Industry Enterprise, we ran into a problem where the Lync 2013 VDI Plugin would not work. The Lync 2013 VDI plug-in would successfully pair with the Lync 2013 Client (green check box in the lower right hand corner of the client) but the Lync client would error saying that there was no Audio Devices available.