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July 21, 2026

Windows - Install Horizon Agent Direct-Connection Plug-In Silently

You can use the silent installation feature of Microsoft Windows Installer (MSI) to install Horizon Agent Direct-Connection Plug-In (formerly View Agent Direct-Connection Plug-In). In a silent installation, you use the command line and do not have to respond to wizard prompts.

With silent installation, you can efficiently deploy Horizon Agent Direct-Connection Plug-In in a large enterprise. For more information on Windows Installer, see "Microsoft Windows Installer Command-Line Options" in the Desktops and Applications in Omnissa Horizon 8 document. Horizon Agent Direct-Connection Plug-In supports the following MSI properties.

MSI Properties for the Silent Installation of Horizon Agent Direct-Connection Plug-In
MSI PropertyDescriptionDefault Value
LISTENPORTThe TCP port that Horizon Agent Direct-Connection Plug-In uses to accept remote connections. By default, the installer will configure Windows Firewall to allow traffic on the port.443
MODIFYFIREWALLIf set to 1, the installer will configure Windows Firewall to allow traffic on LISTENPORT. If set to 0, the installer will not.1
DISABLE_SSLV3If SSL 3.0 is already explicitly enabled or deactivated in the registry, the installer ignores this property. Otherwise, the installer deactivates SSL 3.0 at the operating system level if this property is set to 1, and the installer performs no action if this property is set to 0.1

Prerequisites

  • Verify that Horizon Agent is installed. If your environment does not include Omnissa Horizon Connection Server, install Horizon Agent from the command line and specify a parameter that tells Horizon Agent not to register with Horizon Connection Server. See Windows - Set Up the Desktop for Omnissa Horizon Web Client.

Procedure

  1. Open a Windows command prompt.

  2. Run the Horizon Agent Direct-Connection Plug-In installer file with command-line options to specify a silent installation. You can optionally specify additional MSI properties.

    The following example installs Horizon Agent Direct-Connection Plug-In with default options.

    {installer executable} /s

    The following example installs Horizon Agent Direct-Connection Plug-In and specifies a TCP port that vadc will listen to for remote connections.

    {installer executable} /s /v"/qn LISTENPORT=9999"

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