You can configure USB policies for both the remote desktop (View Agent) and Horizon Client. These policies specify whether the client device should split composite USB devices into separate components for redirection. You can split devices to restrict the types of USB devices that the client makes available for redirection, and to make View Agent prevent certain USB devices from being forwarded from a client computer.

If you have older versions of View Agent or Horizon Client installed, not all the features of the USB redirection policies are available. 1 shows how View applies the policies for different combinations of View Agent and Horizon Client.

Table 1. Compatibility of USB Policy Settings

View Agent Version

Horizon Client Version

Effect of USB Policy Settings on USB Redirection

5.1 or later

5.1 or later

USB policy settings are applicable to both View Agent and Horizon Client. You can use View Agent USB policy settings to block USB devices from being forwarded to a desktop. View Agent can send device splitting and filtering policy settings to Horizon Client. You can use Horizon Client USB policy settings to prevent USB devices from being redirected from a client computer to a desktop.

5.1 or later

5.0.x or earlier

USB policy settings apply only to View Agent. You can use View Agent USB policy settings to block USB devices from being forwarded to a desktop. You cannot use Horizon Client USB policy settings to control which devices can be redirected from a client computer to a desktop. Horizon Client cannot receive device splitting and filtering policy settings from View Agent. Existing registry settings for USB redirection by Horizon Client remain valid.

5.0.x or earlier

5.1 or later

USB policy settings apply only to Horizon Client. You can use Horizon Client USB policy settings to prevent USB devices from being redirected from a client computer to a desktop. You cannot use View Agent USB policy settings to block USB devices from being forwarded to a desktop. View Agent cannot send device splitting and filtering policy settings to Horizon Client.

5.0.x or earlier

5.0.x or earlier

USB policy settings do not apply. Existing registry settings for USB redirection by Horizon Client remain valid.

If you upgrade Horizon Client, any existing registry settings for USB redirection, such as HardwareIdFilters, remain valid until you define USB policies for Horizon Client.

On client devices that do not support client-side USB policies, you can use the USB policies for View Agent to control which USB devices are allowed to be forwarded from the client to a desktop.