If you have multiple microphones on the Mac client, the remote desktop uses only one microphone. You can use the System Preferences on the Mac client to specify the default microphone in the remote desktop.

With the Real-Time Audio-Video feature, audio input devices and audio output devices work without using USB redirection and the required network bandwidth is greatly reduced. Analog audio input devices are also supported.

This procedure describes how to select a microphone from the user interface of the Mac client. You can also configure a preferred microphone by using the Mac defaults system. For more information, see the VMware Horizon Client for Mac Installation and Setup Guide document.

Important: When you use a USB microphone, do not connect it from the Connection > USB menu in Horizon Client. Doing so routes the device through USB redirection and the device cannot use the Real-Time Audio-Video feature.


  • Verify that you have a USB microphone, or another type of microphone, installed and operational on the Mac client.
  • Use the VMware Blast display protocol or the PCoIP display protocol for the remote desktop.


  1. On the Mac client, select Apple menu > System Preferences and click Sound.
  2. Open the Input pane of Sound preferences.
  3. Select the default microphone.


The next time that you connect to a remote desktop and start a call, the remote desktop uses the default microphone that you selected on the Mac client.