Filename: ICAWS760WX64026.msp
For: XenApp 7.6; XenDesktop 7.6 VDA Core Services for Windows Desktop OS (64-bit). For operating system requirements, see Citrix Product Documentation.
Replaces: ICAWS760WX64004, ICAWS760WX64005, ICAWS760WX64010, ICAWS760WX64013, ICAWS760WX64015, ICAWS760WX64017, ICAWS760WX64019, ICAWS760WX64022
Date: July, 2015
Languages supported: English (US), Japanese (JA), Simplified Chinese (SC)
Readme version: 1.00

Readme Revision History

Important Note(s)

• This release is based on Version 7.6 of the VDA Core Services for Windows Desktop (64-bit). It patches only systems where Version 7.6 of the VDA Core Services for Windows Desktop (64-bit) is installed. Any known issues in Version 7.6 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 Product Documentation.

Known Issues in this Release

1. In rare cases, reinstalling this MSP file can cause the Citrix Display Driver (Citrix Systems – WDDM) to get marked for deletion. In turn, this causes the reinstall to fail, leaving the VDA’s display resolution unusable. As a workaround, restart the VDA and then reinstall the MSP. After restarting the VDA, the driver is removed. Then, when you reinstall the MSP, the drivers are successfully reinstalled.

   [From ICAWS760WX64][#0528688]

New Fixes in This Release

1. Windows Server 2008 R2 and Windows Server 2012 R2 might experience a fatal exception when users connect with Receiver for Windows.

   [From ICAWS760WX64026][#LC2179]

Fixes from Replaced Hotfixes

1. If the Windows Remote Desktop Session Host Configuration policy setting "Always prompt for password upon connection" is enabled, when users log on to VDA 7.x by using the ICA protocol, users receive a prompt to enter their credentials again.

   To enable this fix, set the following registry key:

   HKEY_LOCAL_MACHINE\Software\Citrix\Portica
   Name: AutoLogon
   Type: DWORD
   Data: 0x00000001

   Note: The Citrix Display Drive can be marked for deletion if there are multiple attempts to run the MSP file. This causes the installation of the hotfix to fail. In addition, the display resolution of the VDA might not work. To allow this to work, restart the VDA and then install the hotfix again.

   [From ICAWS760WX64004][#LC1180]

2. When Desktop Composition Redirection (DCR) is used on wide area network (WAN) connections, web pages or documents that show text and graphic content might become unresponsive and can also consume high bandwidth.

   [From ICAWS760WX64005][#LC1256]

3. Under certain conditions, desktop sessions connecting through session reliability might experience loss of audio connectivity.

   [From ICAWS760WX64005][#LC1257]

4. The final image quality might degrade if the settings "Build to lossless" and "Allow Visually Lossless Compression" are enabled on the Desktop Delivery Controller (DDC).

   [From ICAWS760WX64005][#LC1271]

5. When users log on for the first time, the screen might appear corrupted in the Receiver session. The issue occurs when you change Visual quality to "Build to lossless" and enable the "Allow visually lossless compression" setting.

   [From ICAWS760WX64005][#LC1272]

6. This fix addresses a usability issue with Desktop Composition Redirection with Receiver for Windows prior to Version 4.200 when used over LAN connections.

   [From ICAWS760WX64005][#LC1507]

7. This fix allows creation of persistence registry settings for user devices.

   [From ICAWS760WX64010][#LC1827]

8. This release fixes redundant frames generated by the HDX graphics encoder, resulting in a smoother frame-rate and better interactivity.

   [From ICAWS760WX64010][#LC2177]

9. If users start a Receiver session when there are existing Remote Desktop and console sessions to the same RemotePC VDA, the Receiver session fails with the message "Reconnecting...." This message appears indefinitely until users manually close the Receiver session.

   [From ICAWS760WX64013][#LC0627]

10. when users connect by using single sign-on to StoreFront through NetScaler Gateway where ICA proxy is enabled and then log off and log on again, VDA policies do not work. When users disconnect the session and then reconnect a second time, the VDA policies work.

    [From ICAWS760WX64013][#LC2577]

11. If legacy graphics are enabled, mouse pointer shadowing is not automatically disabled.

    [From ICAWS760WX64015][#LC2222]

12. The time zone is not correct when users log on with Receiver for Windows. For this hotfix to work correctly, you must install the following:

    1. The same Microsoft time zone update hotfix on the user device and the server. For example, if Microsoft hotfix KB2998527 is installed on the user device, install this hotfix on the server.
    2. Microsoft Hotfix KB2870165 on the server if the server operating system is Windows Server 2008 R2 Service Pack 1.
    3. Fix #LC1392 is installed on the user device.

    [From ICAWS760WX64017][#LC1061]

13. When reconnecting to a Receiver session, the CPU consumption can be high if many Windows Explorer instances are running on a VDA. Additionally, minimized windows get maximized intermittently before getting minimized into the Windows taskbar again.

    [From ICAWS760WX64019][#LC0315]

14. If the keyboard layout of the user device is different from the keyboard layout of the VDA, the display might become unresponsive for about 60 to 70 seconds while starting a virtual desktop session from Receiver for Windows.

    [From ICAWS760WX64019][#LC1939]

15. If the default Unicode input language of the user device is different from the input language of the VDA, the session might become unresponsive while the session desktop is loading.

    [From ICAWS760WX64019][#LC2287]

16. If the keyboard layout of the user device is different from the keyboard layout of the VDA, the session might become unresponsive while the session desktop is loading.

    [From ICAWS760WX64019][#LC2466]

17. A "Connection Established, Negotiating Capabilities" pop-up window appears from the Receiver when the VDA becomes unresponsive. To start any other sessions successfully, restart the VDA.

    [From ICAWS760WX64022][#LC0909]

18. Users cannot switch from a Remote Desktop (RDP) session to a Receiver session.

    [From ICAWS760WX64022][#LC1383]

19. If the UxPersistence key is enabled in the registry, attempts to move applications to the edge of the screen by using the Windows key and the left or right arrow keys fail after disconnecting and then reconnecting to a session.

    [From ICAWS760WX64022][#LC1684]

20. Playing an audio file from Receiver for HTML5 where SSL is enabled in the ICA session can cause the VDA to fail with an error on blue screen.

    [From ICAWS760WX64022][#LC1752]

21. If the VDA is installed by using the command switch /servervdi, Virtual Channels do not appear in HDX supported applications, such as Thinwire Advanced, Flash or Media Player.

    [From ICAWS760WX64022][#LC1894]

22. The Windows server and the desktop VDA might become unresponsive and ICA connections to the VDA fail.

    [From ICAWS760WX64022][#LC2041]

23. Occasionally, window positions are not retained when users reconnect to a VDA and are using multiple monitors.

    [From ICAWS760WX64022][#LC2075]

24. In a XenDesktop session, a message box appears that says a service wants to show a message. When the user clicks "View the message," the XenDesktop session shows a black screen. The issue occurs when the XenDesktop VDA is already using session 0.

    [From ICAWS760WX64022][#LC2160]

25. If users log on to the Web Interface from within a VDA desktop session and attempt to start the same desktop, the session might disconnect and the VDA becomes unresponsive. As a result, users might not be able to start the desktop and the VDA must be restarted.

    [From ICAWS760WX64022][#LC2267]

26. Users cannot start applications after updating cipher registry keys. To apply this fix, install the new version of the SSL SDK.

    [From ICAWS760WX64022][#LC2729]

27. When users reconnect to a VDA, if "User Experience Persistence" is enabled, application windows can be in an incorrect state, such as maximized instead of restored.

    [From ICAWS760WX64022][#LC2769]

28. With this fix, the bandwidth cap for HDX network traffic is 20 megabits per second (Mbps).

    [From ICAWS760WX64022][#LC2780]

29. This release includes support for the Framehawk Virtual Channel, a new ICA virtual channel that extends Citrix HDX technologies to improve user experience on broadband wireless connections where packet loss and latency are common issues. For more information, see New in XenApp 7.6 and XenDesktop 7.6.

    [From ICAWS760WX64022][#LC2782]

30. This release includes an enhancement that allows users that log on with Receiver for HTML5 or Receiver for Chrome to transfer files through remote sessions and local devices. For more information, see Receiver for Chrome or Receiver for HTML5.

    [From ICAWS760WX64022][#LC3014]

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)