Configuring Remote Desktop Features

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If more than one locally connected scanner is congured, you can select a dierent scanner than the one
that is selected by default.
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WIA scanners are displayed in the remote desktop's Device Manager menu, under Imaging devices.
The WIA scanner is named VMware Virtual WIA Scanner.
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In the Scanner Redirection for VMware Horizon menu, you can click the Preferences option and select
options such as hiding webcams from the scanner redirection menu and determining how to select the
default scanner.
You can also control these features by conguring scanner redirection group policy seings in Active
Directory. See “Scanner Redirection Group Policy Seings,” on page 36.
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When you operate a TWAIN scanner, the TWAIN Scanner Redirection for VMware Horizon menu
provides additional options for selecting regions of an image, scanning in color, black and white, or
grayscale, and choosing other common functions.
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To display the TWAIN user interface window for TWAIN scanning software that does not display the
window by default, you can select an Always show Scanner  dialog option in the VMware
Horizon Scanner Redirection Preferences dialog box.
Note that most TWAIN scanning software displays the TWAIN user interface window by default. For
this software, the window is always displayed, whether you select or deselect the Always show
Scanner  dialog option.
N If you run two RDS applications that are hosted on dierent farms, two scanner redirection tool tray
icons appear on the client computer. Typically, only one scanner is connected to a client computer. In this
case, both icons operate the same device, and it does not maer which icon you select. In some situations,
you might have two locally connected scanners and run two RDS applications that run on dierent farms. In
that case, you must open each icon to see which scanner redirection menu controls which RDS application.
For end-user instructions for operating redirected scanners, see the Using VMware Horizon Client for Windows
document.
Configuring Scanner Redirection Group Policy Settings
You can congure group policy seings that control the behavior of scanner redirection on your Horizon 7
desktops and applications. With these policy seings, you can control centrally, from Active Directory, the
options that are available in the VMware Horizon Scanner Redirection Preferences dialog box on users'
desktops and applications.
You do not have to congure these policy seings. Scanner redirection works with the default seings that
are congured for scanning devices on remote desktops and client systems.
These policy seings aect your remote desktops and applications, not the client systems where the physical
scanners are connected. To congure these seings on your desktops and applications, add the Scanner
Redirection Group Policy Administrative Template (ADMX) le in Active Directory.
Add the Scanner Redirection ADMX Templates in Active Directory
You can add the policy seings in the scanner redirection ADMX template le (vdm_agent_scanner.admx) to
group policy objects (GPOs) in Active Directory and congure the seings in the Group Policy Object Editor.
Prerequisites
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Verify that the Scanner Redirection setup option is installed on your desktops and RDS hosts. The
group policy seings have no eect if scanner redirection is not installed. See your Seing Up document
for information on installing Horizon Agent.
Chapter 2 Configuring Remote Desktop Features
VMware, Inc. 35