Archive for January, 2011

LiveCycle ES: support for LC ES in virtualized environments


 Virtualization technologies tested and supported by Adobe for LiveCycle ES include VMware ESX, IBM LPAR, and Solaris Zones. Microsoft Hyper-V is not supported.

VMware created the virtualization market in the x86 world. Their product offerings can be grouped under two buckets: hosted and bare-metal. Bare-metal virtualization offers better performance than hosted virtualization.

Hosted virtualization requires a “host” operating system which hosts other “guest” operating systems hat are contained in virtual machines.  A bare-metal virtualization platform is a bases operating system-like kernel called the hypervisor, usually with a management console that runs on top of the kernel. There is no host OS.

You can find detailed information about installing/deploying LiveCycle ES and ES2 in virtualized environments under the following links, or by searching on

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Acrobat/Reader: slow display performance in Terminal Server or Citrix environments


When you view PDF files in Adobe Acrobat or Adobe Reader in a Terminal Server/Citrix environment, the display is slow to update over an RDP connection.  This issue is particularly noticeable when scrolling through PDF documents that contain high-resolution images.


Solution 1: Update the Page Display preferences in Acrobat or Reader.

Change the following settings in Acrobat or Reader.  You can either disable these options directly in Reader/Acrobat under “Edit > Preferences > Page Display > Rendering”, or using the registry keys for system administrators:

  • deactivate “2D Graphic accelerationHKCU\Software\Adobe\Acrobat Reader\9.0\AVDisplay – bUse2DGPUf=dword:0
  • deactivate “Smooth imagesHKCU\Software\Adobe\Acrobat Reader\9.0\Originals – bAntialiasImages=dword:0
  • deactivate “Smooth line artHKCU\Software\Adobe\Acrobat Reader\9.0\Originals – bAntialiasGraphics=dword:0
  • set “Smooth Text” to None (optional: some customers have reported acceptable performance without setting Smooth Text to None)
    • HKCU\Software\Adobe\Acrobat Reader\9.0\Originals – bAntialiasText=dword:0
    • HKCU\Software\Adobe\Acrobat Reader\9.0\Originals – iAntialiasThreshold=dword:0
    • HKCU\Software\Adobe\Acrobat Reader\9.0\Originals – benableDDR=dword:0

Changing registry values is not officially supported by Adobe and you do so at your own risk.  You should only be changing the registry settings if you have the correct privileges and experience in this area.

System Administrators should change these settings first using the Preferences dialog in Adobe Reader (not using the registry) and re-test the performance through Citrix.  Once you have the right combination of settings that work, then you should record the values of these registry keys to use for your other Reader installations.  This is important as the value of the iAntialiasThreshold key can differ (0, 1, or 12) depending on which of the other options are deactiviated.

Note: These settings will improve the display performance on low-bandwidth connections, however, they can adversely affect the display performance on LAN connections.  You will need to test these thoroughly.

Solution 2: Use an RDP compression tool to compress the data being sent “over-the-wire.”

RDP sends the entire set of image data each time the image is scrolled on the page.  Sending all the data at once can cause congestion on the network connection, especially with limited bandwidth.  Some customers have had success using the following tool to improve the display performance on Terminal Server for low-bandwidth connections:

Additional information

There are no general solutions in Acrobat or Reader to improve performance problems in Terminal Server. Performance issues are often based on the bandwidth limitations of the network connection, or the RDP protocol itself.

The RDP protocol does not always handle image data well.  A terminal server on Windows 2003 Server uses RDP version 5.2.  A terminal server on Windows 2008 Server uses RDP version 7.0, which does improve display performance for images.  Therefore, an upgrade to a later operating system can also improve the performance if it uses a more recent RDP version like 7.0.

Here is an article from Citrix referring to the same issue:

and an entry in ourn forums discussing the same:

reference: (181990819)

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Acrobat/Reader: can’t set “access” property on Radio-buttons at run-time


It is not possible to set the access property of an individual radio button at run-time in Acrobat or Reader 9, or Acrobat or Reader 7.  This was possible in Acrobat/Reader 8.


Set the property on the exclusion group level (that is, the parent object) and not on the field level. For radio button lists, set the property at the Radio-Button group object and not the individual button object.

Additional information

From Designer 7.1 Help:

About Radio buttons

Radio buttons are contained within exclusion groups. Only one radio button in the exclusion group can be selected at a time.
An exclusion group can be manipulated as one object.
Some options on the Object palette apply to all of the radio buttons in the same exclusion group.


Radio button properties in the Value tab

When you create an exclusion group of radio buttons, the Value tab presents a number of options that you can apply to the entire group.

reference: (181949673)

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