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VXC 6215 Citrix HDX MediaStream Flash Redirection Detail Configuration Steps



a. ica- - Citrix Receiver 12.1 to support flash redirection
b. flash-player-lite- - Adobe flash player for thin client
c. icaSettings-8.5.7-8.sletc11sp1.rpm - Standalone addon to modify ICA configuration to support flash redirection
d. vxc-8.6-639.sletc11sp1.rpm - New UC-addon including the modification of ICA configuration to support flash redirection

  • Compatible Adobe Flash Player for Internet Explorer is  installed in HVD.  There is a version check between the two different  Flash players (on the thin client and virtual desktop) and these must  have the same major version number e.g they need to be both on version  11, and HVD is on 11.3, thin client is on 11.1 is OK.

Use VXC-M to push required add-ons to VXC 6215

Example wlx.ini file for using UC-addon to change ICA connection :


Example wlx.ini file for using standalone ICA settings to change ICA connection :


Step by Step Configuration Instruction:

1. Open Xendesktop Desktop Studio from DDC:

2. Navigate to HDX User Policy, and Click on "New" to create a new  HDX user policy (If there are no previous policies in place then only  one default policy will show up called Unfiltered):

3. In the new window for New Policy, Give the policy a name and an optional description:

4. The next screen will show the policy options available to  configure for this policy. In this case we want to select HDX  MediaStream for Flash (client side) under ICA > Multimedia -  XenDesktop 5.0, select ICA > Adobe Flash Delivery > Flash  Redirection - XenDesktop 5.5 or later

Xendesktop 5.0

Xendesktop 5.5 or later

5. Enable the Flash Acceleration setting by clicking Add and when  the new window appears ensure Enabled is selected and click OK.

6. For Xendesktop 5.5 and later, configure "Flash URL compatibility  list" to specify the flash content render behaviour which can override  the "Flash Default behaviour" settings. For Xendesktop 5.0, this  settings is not available. You can use a wildcard "*" as part of the URL  to include group of URLs, e.g* is to match all flash content from youtube, and "*" is to match all websites.

7. Skip this step if you want to configure client fetch and render  flash redirection. For server-side fetch and client-side render, you  need to create a setting for web URLs to be exempted from the client  fetch and render default behaviour, and thus doing server-side fetch and  client-side render. Configure "Flash server-side content fetching URL  list" setting for Xendesktop 5.5 or later, and configure "Flash  server-side content fetching whitelist" for Xendesktop 5.0. You can use a  wildcard "*" as part of the URL to include group of URLs, e.g* is to match all flash content from youtube, and "*" is to match all websites.

Xendesktop 5.5 or later

Xendesktop 5.0

8. [OPTIONAL] After choosing above settings needed to be applied, we  can specify where the policy is needed to be applied, e.g a certain  category of users, machines, locations, etc.. To do this, we can specify  a filter, and in this example, we only apply this policy to one user.  After clicked OK, the policy is created.

9. We will need to move up the created policy to be above the default unfiltered policy to the appropriate position:

10. Finally you can update the policies immediately by opening an  Administrative command prompt (right click the command prompt within the  Start menu and choose Run as administrator) and type ‘gpupdate  /force’.Once the prerequisites are installed on the virtual desktop and  the policies have been updated on the XenDesktop 5.0 server then the  machine should just need to be restarted. When the user logs in the  policies should be applied.

Troubleshooting and Verification the Setup