Filename: ICAWS750WX86025.msp
For: XenApp 7.5; XenDesktop 7.1 and 7.5 VDA Core Services for Windows Desktop OS (32-bit). For operating system requirements, see Citrix eDocs, the Citrix Product Documentation Library.
Replaces: ICAWS750WX86014
Date: February, 2015
Language supported: English (US), Japanese (JA), Simplified Chinese (SC)
Readme version: 1.00

Readme Revision History

Important Note(s)

• This release is based on Version 7.1/7.5 of the VDA Core Services for Windows Desktop (32-bit). It patches only systems where Version 7.1/7.5 of the VDA Core Services for Windows Desktop (32-bit) is installed. Any known issues in Version 7.1/7.5 of the product, except for the specific issues resolved in this limited release, still apply.
• You can upgrade the VDA from a console session or from an RDP session. Upgrading from within an ICA session is not supported.
• Caution! This release may require you to edit the registry. Using Registry Editor incorrectly can cause serious problems that may require you to reinstall your operating system. Citrix cannot guarantee that problems resulting from the incorrect use of Registry Editor can be solved. Use Registry Editor at your own risk.

Where to Find Documentation

This document describes the issue(s) resolved by this release and includes installation instructions. For additional product information, including supported operating systems and system requirements, see Citrix eDocs, the Citrix Product Documentation Library.

Important Disclaimer - Limited Release Hotfix

If the Download link is not available on this page and you wish to obtain this limited distribution release, visit our support site at http://www.citrix.com/support and open a support case using your Citrix account credentials, or contact your reseller at http://www.citrix.com/partners/locator.

Testing of this release was targeted only at the affected functionality, and regression and stress testing were minimal. Introduce this release to a test environment for evaluation before deploying it to a production environment.

TO THE EXTENT PERMITTED BY APPLICABLE LAW, CITRIX AND ITS SUPPLIERS MAKE AND YOU RECEIVE NO WARRANTIES OR CONDITIONS, EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, AND CITRIX AND ITS SUPPLIERS SPECIFICALLY DISCLAIM WITH RESPECT TO THE HOTFIX ANY CONDITIONS OF QUALITY, AVAILABILITY, RELIABILITY, SECURITY, LACK OF VIRUSES, BUGS OR ERRORS, OR SUPPORT AND ANY IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, ANY WARRANTY OF TITLE, QUIET ENJOYMENT, QUIET POSSESSION, MERCHANTABILITY, NONINFRINGEMENT, OR FITNESS FOR A PARTICULAR PURPOSE. TO THE EXTENT PERMITTED BY APPLICABLE LAW, NEITHER CITRIX, NOR ITS SUPPLIERS SHALL BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL, MULTIPLE, PUNITIVE OR OTHER DAMAGES (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF DATA, LOSS OF INCOME, LOSS OF OPPORTUNITY, LOST PROFITS, COSTS OF RECOVERY OR ANY OTHER DAMAGES), HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, AND WHETHER OR NOT FOR BREACH OF CONTRACT, NEGLIGENCE OR OTHERWISE, AND WHETHER OR NOT CITRIX, ITS SUPPLIERS, OR LICENSORS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

New Fixes in This Release

1. With HDX Mediastream for Flash enabled, opening and closing multiple tabs in Internet Explorer can cause Internet Explorer to close unexpectedly.

   [From ICAWS750WX86025][#LC1141]

Fixes from Replaced Hotfixes

1. Browsing certain Web sites with HDX MediaStream Flash Redirection enabled can cause the PseudoContainer2.exe process to exit unexpectedly.

   To enable this fix, you must set the following registry key on the VDA:

   HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\HdxMediaStreamForFlash\Server\PseudoServer
   Name: SupportedUrlHeads
   Type: REG_MULTI_SZ
   Data: <each value on a separate line, null separated:>
   http://
   https://
   file://

   Note: To provide a better browsing experience with HDX Flash, Citrix recommends that you also install Receiver Fix #LA5255 (Citrix Receiver for Windows 3.4 Cumulative Update 3 or its replacement) on the endpoint.

   [From ICAWS750WX86014][#LA4151]

2. When using Microsoft Internet Explorer 9 and later versions of the browser, if you click a link to a Flash redirected video while another Flash redirected video is already playing, the audio streams of the two videos overlap.

   This fix does not eliminate the issue, but setting the following registry key on the VDA allows you to shorten the amount of time during which it occurs:

   HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\HdxMediaStreamForFlash\Server\PseudoServer
   Name: UrlListForTerminationFlashInst
   Type: REG_MULTI_SZ
   Data: <URLs of affected websites; include both http:// and https://, each on a separate line; for example: http://www.youtube.com/; https://www.youtube.com/>

   [From ICAWS750WX86014][#LC0453]

3. When using Microsoft Internet Explorer 9 or later, Flash redirection can fail for videos embedded in websites. A black rectangle appears in place of the video.

   To enable this fix, you must set the following registry key:

   HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\HdxMediaStreamForFlash\Server\PseudoServer
   Name: WorkWithAeroEnabled
   Type: REG_DWORD
   Data: 0

   [From ICAWS750WX86014][#LC0477]

4. After using YouTube's built-in Search field In Microsoft Internet Explorer 8 and later versions of the browser, HDX Flash Redirection reverts to server-side rendering.

   To enable this fix, you must set the following registry key on the VDA:

   HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\HdxMediaStreamForFlash\Server\PseudoServer
   Name: SupportedUrlHeads
   Type: REG_MULTI_SZ
   Data: <each value on a separate line, null separated>
   http://
   https://
   file://

   Note: SupportedUrlHeads was first introduced in Fix #LA4151. It is also used by this fix. If you add SupportedUrlHeads to the Registry, Flash Redirection ignores a Flash instantiation request unless the targeted URL starts with one of the headers specified in SupportedUrlHeads.

   [From ICAWS750WX86014][#LC0505]

5. Flash redirection fails for videos embedded on cnn.com and msn.com. A black rectangle appears in place of the video.

   In order to enable this fix, you must set the following registry keys:

   HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\HdxMediaStreamForFlash\Server\PseudoServer\ASJSCallbacks

   For cnn.com:

   Name: cnn.com
   Type: REG_MULTI_SZ

   Data:	javaScriptLoaded
   	setQueueAutoplay
   	setAdVisibility
   	setPlayerMode
   	setAdSection
   	setAdKeyValue
   	playContent
   	getContentEntry
   	switchTrackingContext

   For msn.com:

   Name: msn.com
   Type: REG_MULTI_SZ

   Data:	MsnVideoCallback
   	MsnVideoPropertyCallback
   	GetWidgetID

   Note: This fix works only for Internet Explorer 9 and later.

   [From ICAWS750WX86014][#LC0665]

Installing and Uninstalling this Release

Notes:

• This release is packaged with Microsoft Windows Installer 3.0 as a .msp file. For more information about deploying .msp files, see Microsoft article 884016 or visit the Microsoft Web site and search on keyword msiexec.
• This installer program complies with Microsoft User Account Control (UAC). If UAC is enabled, you must run the installer program in elevated mode; that is, with administrative privileges enabled. For more information about UAC, see Microsoft TechNet or visit the Microsoft Web site and search on keyword UAC.
• To install this release successfully, computers must not have registry modification restrictions in place.
• Slipstreaming - installations of the VDA for Windows Desktop OS base product packaged with one or more individual hotfixes - is not supported and might leave servers in an unstable state.
• You must restart the server after the installation of this hotfix completes. However, if you are installing multiple hotfixes at the same time, there is no need to restart the server after the installation of each hotfix. It is sufficient to restart the server after the installation of the final hotfix completes.
• If the need arises to restore the original settings and functionality provided by this release, you must uninstall the release before reinstalling it according to the installation instructions below.

To install this release:

1. Copy the release package to an empty folder on the hard drive of the computer you want to update.
2. Close all applications.
3. Run the executable.
4. Restart the computer.

To uninstall this release:

1. From the Start menu, select Control Panel > Programs and Features.
2. Highlight the release you want to uninstall and click Uninstall.
3. Follow the directions on-screen.

Files Updated (All Dates/Times UTC)