You can configure USB policies for both the remote desktop or application (Horizon 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 Horizon Agent prevent certain USB devices from being forwarded from a client computer.

If you have older versions of Horizon 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 Horizon Agent and Horizon Client.

Table 1. Compatibility of USB Policy Settings

Horizon 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 Horizon Agent and Horizon Client. You can use Horizon Agent USB policy settings to block USB devices from being forwarded to a desktop. Horizon 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.

Note:

In View Agent 6.1 or later and Horizon Client 3.3 or later, these USB redirection policy settings apply to RDS desktops and applications as well as to remote desktops that run on single-user machines.

5.1 or later

5.0.x or earlier

USB policy settings apply only to Horizon Agent. You can use Horizon 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 Horizon 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 Horizon Agent USB policy settings to block USB devices from being forwarded to a desktop. Horizon 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 Horizon Agent to control which USB devices are allowed to be forwarded from the client to a desktop or application.