To disable SpeedScreen Multimedia Acceleration on an endpoint device

Change the following ICA parameter in the registry or in the ICA file:

HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\ICA Client\Engine\Lockdown Profiles\All Regions\Lockdown\Virtual Channels\Multimedia
Name: SpeedScreenMMA
Type: REG_SZ
Data: False

To disable SpeedScreen Multimedia Acceleration on Desktop Delivery Controllers:

  1. At a command prompt, cd to C:\Program Files\Citrix\Desktop Delivery Controller.
  2. Execute PorticaSetDefaults.exe /o <filename.xml> to create an editable settings XML file.
  3. Open the xml file created in the previous step and locate the SpeedScreen Multimedia section.
  4. Change the entry for <Enabled>true</Enabled> (default) of the SpeedScreen Multimedia section to <Enabled>false</Enabled>.
  5. Save your changes.
  6. Reimport the settings using Porticasetdefaults /i. The settings will take effect the next time a Virtual Desktop Controller registers against this Desktop Delivery Controller.
  7. Repeat the previous step on every Desktop Delivery Controller that conducts VDA registrations.