The scanner redirection group policy settings control the options that are available in the VMware Horizon Scanner Redirection Preferences dialog box on users' desktops and applications.

The scanner redirection ADM file contains both Computer Configuration and User Configuration policies. The User Configuration policies allow you to set different configurations for users of VDI desktops, RDS desktops, and RDS applications. Different User Configuration policies can take effect even when users' desktop sessions and applications are running on the same RDS hosts.

Group Policy Setting

Description

Disable functionality

Disables the scanner redirection feature.

This setting is available as a Computer Configuration policy only.

When you enable this setting, scanners cannot be redirected and do not appear in the scanner menu on users' desktops and applications.

When you disable this setting or do not configure it, scanner redirection works and scanners appear in the scanner menu.

Lock config

Locks the scanner redirection user interface and prevents users from changing configuration options on their desktops and applications.

This setting is available as a Computer Configuration policy only.

When you enable this setting, users cannot configure the options that are available from the tray menu on their desktops and applications. Users can display the VMware Horizon Scanner Redirection Preferences dialog box, but the options are inactive and cannot be changed.

When you disable this setting or do not configure it, users can configure the options in the VMware Horizon Scanner Redirection Preferences dialog box.

Compression

Sets the image compression rate during the image transfer to the remote desktop or application.

You can choose from the following compression modes:

  • Disable. Image compression is disabled.

  • Lossless. Lossless (zlib) compression is used without loss of image quality.

  • JPEG. JPEG compression is used with loss of quality. You specify the level of image quality in the JPEG compression quality field. JPEG compression quality must be a value between 0 and 100.

When you enable this setting, the selected compression mode is set for all users affected by this policy. However, users can change the Compression option in the VMware Horizon Scanner Redirection Preferences dialog box, overriding the policy setting.

When you disable this policy setting or do not configure it, JPEG compression mode is used.

Hide Webcam

Prevents webcams from appearing in the scanner selection menu in the VMware Horizon Scanner Redirection Preferences dialog box.

This setting is available as a Computer Configuration and User Configuration policy.

By default, webcams can be redirected to desktops and applications. Users can select webcams and use them as virtual scanners to capture images.

When you enable this setting as a Computer Configuration policy, webcams are hidden from all users of the affected computers. Users cannot change the Hide Webcam option in the VMware Horizon Scanner Redirection Preferences dialog box.

When you enable this setting as a User Configuration policy, webcams are hidden from all affected users. However, users can change the Hide Webcam option in the VMware Horizon Scanner Redirection Preferences dialog box.

When you enable this setting in both Computer Configuration and User Configuration, the Hide Webcam setting in Computer Configuration overrides the corresponding policy setting in User Configuration for all users of the affected computers.

When you disable this setting or do not configure it in either policy configuration, the Hide Webcam setting is determined by the corresponding policy setting (either User Configuration or Computer Configuration) or by user selection in the VMware Horizon Scanner Redirection Preferences dialog box.

Default Scanner

Provides centralized management of scanner autoselection.

This setting is available as a Computer Configuration and User Configuration policy.

You select scanner autoselection options separately for TWAIN and WIA scanners. You can choose from the following autoselection options:

  • None. Do not select scanners automatically.

  • Autoselect Automatically select the locally connected scanner.

  • Last used Automatically select the last-used scanner.

  • Specified Select the scanner name that you type in the Specified scanner text box.

When you enable this setting as a Computer Configuration policy, the setting determines the scanner autoselection mode for all users of the affected computers. Users cannot change the Default Scanner option in the VMware Horizon Scanner Redirection Preferences dialog box.

When you enable this setting as a User Configuration policy, the setting determines the scanner autoselection mode for all affected users. However, users can change the Default Scanner option in the VMware Horizon Scanner Redirection Preferences dialog box.

When you enable this setting in both Computer Configuration and User Configuration, the scanner autoselection mode in Computer Configuration overrides the corresponding policy setting in User Configuration for all users of the affected computers.

When you disable this setting or do not configure it in either policy configuration, the scanner autoselection mode is determined by the corresponding policy setting (either User Configuration or Computer Configuration) or by user selection in the VMware Horizon Scanner Redirection Preferences dialog box.