Redirecting Flash content from a remote desktop to a Flash Player window on the local client system requires installing the Flash Redirection feature and Internet Explorer on the remote desktop and the client system and specifying which websites use this feature.

About this task

To enable this feature and specify which websites use this feature, you configure group policy settings. Alternatively, you can use Windows Registry settings on the remote desktop to configure a white list of websites to use for Flash Redirection. See Use Windows Registry Settings to Configure Flash Redirection.

Prerequisites

  • Install Horizon Client on the client system and install Horizon Agent on the remote desktop with the Flash Redirection feature enabled. For required versions, setup options, and complete system requirements, see System Requirements for Flash Redirection.

  • Verify that you can log in as an Administrator domain user on the machine that hosts your Active Directory server.

  • Verify that the MMC and the Group Policy Object Editor snap-in are available on your Active Directory server.

  • Add the Horizon Agent Configuration ADMX template file vdm_agent.admx file to the OU for the remote desktop. For installation instructions, see Add the ADMX Template Files to Active Directory.

  • Compile a list of the websites that can (a white list) or cannot (a black list) redirect Flash content.

  • Verify that Flash ActiveX is installed and works properly. To verify the installation, run Internet Explorer and go to https://helpx.adobe.com/flash-player.html.

Procedure

  1. On the client system, install the ActiveX version of Flash Player (rather than the NPAPI version), if necessary.

    Flash Player is installed by default in Internet Explorer 10 and 11. For Internet Explorer 9, you might need to go to https://get.adobe.com/flashplayer/ to download and install Flash Player.

  2. On the remote desktop, perform the following installation steps.
    1. Install Internet Explorer 9, 10, or 11.
    2. Install the ActiveX version of Flash Player (rather than the NPAPI version), if necessary.

      Flash Player is installed by default in Internet Explorer 10 and 11. For Internet Explorer 9, you might need to go to https://get.adobe.com/flashplayer/ to download and install Flash Player.

  3. On the remote desktop, in Internet Explorer, select Tools > Manage add-ons from the menu bar and verify that VMware View FlashMMR Server is listed and enabled.
  4. On the Active Directory server, open the Group Policy Management Editor and configure the Flash Redirection policy settings in the Computer Configuration > Policies > Administrative Templates > VMware View Agent Configuration > VMware FlashMMR folder.

    Setting

    Description

    Enable Flash multi-media redirection

    Specifies whether Flash Redirection (FlashMMR) is enabled on the remote desktop (agent-side). When enabled, this feature forwards Flash multi-media data from the designated URLs through a TCP channel to the client, and invokes the local Flash Player on the client system. This feature greatly reduces demand on the agent-side CPU and network bandwidth.

    Minimum rect size to enable FlashMMR

    Specifies the minimum width and height, in pixels, of the rectangle in which the Flash content is played. For example, 400,300 specifies a width of 400 pixels and a height of 300 pixels. Flash Redirection is used only if the Flash content is equal to or greater than the values specified in this policy. If this GPO is not configured, the default value used is 320,200.

  5. On the Active Directory server, open the Group Policy Management Editor and configure the Flash Redirection policy settings in the User Configuration > Policies > Administrative Templates > VMware View Agent Configuration > VMware FlashMMR folder.
    1. To define a list of host URLs to use with Flash redirection, open the Definiton for FlashMMR url list usage setting and select Enabled.
    2. In the Definition for FlashMMR url list usage drop-down menu, select Enable white list or Enable black list, and click OK.

      By default, a white list is enabled.

    3. To add the list of host URLs that use or do not use Flash Redirection, open the Hosts Url list to enable FlashMMR setting and select Enabled.
    4. Click Show and enter the complete URLs that you compiled for the white list or black list in the Value Name column.

      Include the http:// or https:// prefix in the URL. You can use regular expressions. For example, you can specify https://*.google.com and http://www.cnn.com/*.

      In the Value column, you can optionally specify requireIECompatibility=true, appMode=0, or both. Use a comma to separate the two strings.

      By default, external interface support is enabled when Flash Redirection runs and can degrade performance. In certain situations, setting appMode=0 can improve performance and result in a better user experience.

    5. Click OK to save the URL list, and click OK again to save the policy setting.
  6. On the remote desktop, open a command prompt and navigate to the %Program Files%\Common Files\VMware\Remote Experience directory.
  7. To add the white list or black list to Internet Explorer, run the cscript mergeflashmmrwhitelist.vbs command.
  8. Restart Internet Explorer.

    The sites set with the requireIECompatibility=true parameter are added to Internet Explorer's compatibility view. To verify the sites in compatibility view, select Tools > Compatibility View Settings from the menu bar.

    The sites are also added to Internet Explorer's list of trusted sites. To verify the trusted sites, select Tools > Internet Options from the Internet Explorer menu bar and click Sites and on the Security tab.