Issues Fixed in This Release

XenDesktop 7.x VDA for Windows Desktop OS

Product: VDA for Windows Desktop OS
Current Product Version: 7.6
Previous Product Version: 7

The following issues were fixed in XenDesktop 7.x:

XenDesktop 7.6 for Windows Desktop OS

XenDesktop 7.5 for Windows Desktop OS

XenDesktop 7.1 for Windows Desktop OS

XenDesktop 7 for Windows Desktop OS

VDA 7.6 for Windows Desktop OS

Broker Agent	Printing
HDX 3D Pro	Security Issues
HDX MediaStream Flash Redirection	Session/Connection
HDX MediaStream Windows Media Redirection	Smart Cards
HDX Plug-n-Play	System Exceptions
Installing, Uninstalling, Upgrading	User Experience
Keyboard/Mouse	Miscellaneous

Broker Agent

1. VDA registration might fail intermittently as a result of not getting the Session ID of Active Directory.

   [#LA3504]

2. Version 7.x of the VDA 7.0 fails to register to the Controller in disjoint namespace environments. For more information about disjoint namespace, see http://technet.microsoft.com/en-us/library/cc731125(v=ws.10).aspx.

   [#LA4443]

3. When reconnecting over a LAN to a session that was initiated over a WAN, the HDX WAN policy is applied in the reconnected session.

   [#LA4728]

4. In mixed environments where XenDesktop 7 VDAs are registered to XenDesktop 5.6 Controllers, Desktop Studio, under Session information, displays incorrect logon times.

   [#LA4966]

5. Running the XenDesktopVdaSetup.exe /? command to display all available switches for the installer displays enable_remote_management as an available switch even though support for that switch has been removed. This fix removes the switch from the list of switches displayed.

   [#LA5132]

6. In mixed environments where XenDesktop 7.1 VDAs are registered to XenDesktop 5.6 Controllers, Desktop Studio, under Session information, displays VDAs that have disconnected sessions as Ready.

   [#LA5352]

7. Attempts to launch a VDA from StoreFront can fail with the following error message even when a redundant controller is available:

   "You cannot access this session because no licenses are available."

   [#LC0255]

HDX 3D Pro

1. This enhancement provides additional compatibility with Nvidiaâ??s GRID API related to GPU pass-through and vGPU use cases.

   [#LA5251]

2. In HDX 3D Pro sessions, the screen can fail to be fully drawn; instead, parts of the session screen appear in black.

   [#LA5338]

3. This enhancement provides additional compatibility with Nvidia's GRID API related to GPU pass-through and vGPU use cases. Specifically, it addresses the following issues: â?¢With GPU pass-through enabled, sessions with certain custom resolutions fail to launch. â?¢In full-screen VDA sessions with a 2560x1600 custom resolution, switching among open applications and/or closing applications fails to refresh the session window. As a result, a ghost window remains on the screen.

   [#LA5769]

HDX MediaStream Flash Redirection

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\Wow6432Node\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.

   [#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 server allows you to shorten the amount of time during which it occurs:

   HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\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/>

   [#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\Wow6432Node\Citrix\HdxMediaStreamForFlash\Server\PseudoServer
   Name: WorkWithAeroEnabled
   Type: REG_DWORD
   Data: 0

   [#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 server:

   HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\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.

   [#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\Wow6432Node\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.

   [#LC0665]

6. Microsoft Internet Explorer might exit unexpectedly, referencing pseudoserverinproc2.dll, if Adobe Flash Player 11.8.800.168 or later is installed.

   [#LA4996]

HDX MediaStream Windows Media Redirection

1. When playing an audio file in a VDA session, the sound can be somewhat distorted. Distortions can include pulsating, popping, or hissing sounds.

   [#LA4882]

HDX Plug-n-Play

1. The USB device, Syn-Tech ProKee V2 fails to get redirected. The following CDF trace is displayed:

   "Failed to assign the instance ID, error 0xc000000d."

   [#LA4920]

2. This enhancement allows NI USB-8473 devices to be redirected into virtual desktop sessions.

   [#LA4970]

3. This enhancement allows USB HID devices(device descriptor with device class: 0xFF, interface descriptor with device class: 0x03) to be redirected into virtual desktop sessions.

   [#LA5388]

Installing, Uninstalling, Upgrading

1. Attempts to install the VDA on Windows 7 64-bit using the XenDesktopVdaSetup.exe /NOCITRIXWDDM command (to prevent Citrix WDDM drivers from installing) fail.

   [#LC0235]

Keyboard/Mouse

1. When reconnecting to a session from a different user device that has a different keyboard layout, the new keyboard layout is not applied automatically to the existing session.

   [#LA5004]

Printing

1. Attempts to map the Universal Printer Driver from a client device can cause the Spooler process (spoolsv.exe) to exit unexpectedly.

   [#LA3976]

2. Attempts to print using the XPS Universal Printer driver can cause third party applications to become unresponsive while printing on autocreated client printers. As a result, the print spooler service might exit unexpectedly.

   [#LA4148]

3. This fix ensures that client-side LPT ports are not displayed in the session with the following policies configured as follows:

   • Auto Connect client LPT ports: Disabled
   • LPT port redirection: Prohibited
   • Client Printer redirection: Prohibited

   Note: For 64-bit VDAs, this fix requires that you also install Fix #LA2941.

   [#LA4280]

4. Session printers are not deleted when connecting from different end points that are subject to different printing policies. The issue occurs because the Citrix Print Manager Service, CpSVc.exe, does not honor policy changes during session reconnection, including the deletion of printers that are no longer required under any newly applicable policies upon reconnection. This enhancement introduces support for the following registry key that, if set, enables the deletion of session printers upon reconnect if policies dictate that they are no longer required:

   HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\ICA\PrintingSettings
   Name: DeleteNetworkPrinters
   Type: REG_DWORD
   Data: 1 (to enable deletion of unnecessary session printers)

   [#LA4360]

5. When using the Citrix Universal Printer Driver (UPD) and selecting Printer Properties from within the Print menu of Microsoft Office 2003 and 2010 applications, the Paper Tray menu can appear blank.

   [#LA4483]

6. This fix addresses the following issues:

   After upgrading to Hotfix Rollup Pack 2 (Fix #LA2240):

   • The option to print to another tray is no longer available from the printer properties dialog box
   • When printing using the UPD driver, the paper size and print alignment are slightly off

   [#LA4559]

7. With the Citrix Print Manager Service (CpSvc.exe) running and the Client Printer redirection policy set to prohibited, local printers connected to the end point via the LPT port are displayed as shared printers in the VDA session.

   Note: For 64-bit VDAs, this fix requires that you also install Fix #LA2941.

   [#LA4828]

8. On systems with Fix #LA0907 installed, printers might take a long time to open the Printer Properties sheet.

   [#LA5202]

9. If using the XPS universal printer driver (UPD), the page orientation (portrait or landscape) cannot be changed on the Layout tab in Microsoft Outlook 2010.

   [#LA5211]

10. When using the Citrix XPS Universal Printer driver to print a Microsoft Excel document, each Excel cell of the spreadsheet is printed as a single page, causing multiple pages to be printed. The issue occurs when modifying the page layout ("Printer Properties" > "Layout") on the Citrix UPD screen.

    To enable the fix, set the following registry key:

    HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\Print
    Name: dmFields
    Type: REG_DWORD
    Data: 0x00000010

    [#LA5228]

11. The Citrix Print Manager Service (CpSvc.exe) process might exit unexpectedly. As a result, printers fail to autocreate.

    [#LA5451]

12. The Citrix Print Manager Service (CpSvc.exe) process might exit unexpectedly and cause printer autocreation in Remote PC Access sessions to fail.

    [#LA5508]

13. This fix addresses the following issues with Windows Photo Viewer in scenarios where the "Auto-create generic universal printer" policy is enabled and the "Universal driver preference" is set to XPS:

    • Clicking OK after changing printer settings on the Settings page can cause Windows Photo Viewer to exit unexpectedly.
    • The 600 x 600 and 1200 x 1200 dpi options are not available.
    • Selecting Landscape orientation results in reverse portrait.

    [#LC0149]

14. Client printer redirection in a VDA session can fail after switching from an RDP session.

    [#LC0164]

15. Attempts to install the VDA on Windows 7 64-bit using the XenDesktopVdaSetup.exe /NOCITRIXWDDM command (to prevent Citrix WDDM drivers from installing) fail.

    [#LC0298]

Security Issues

1. This fix addresses a security vulnerability. For more information, see Knowledge Center article CTX139591.

   [#LA4447]

Session/Connection

1. Under certain circumstances, Citrix policies might not be applied correctly and can fall back to the default values.

   [#LA4028]

2. Users of touch-optimized desktops for mobile devices cannot view the contents of their "My Documents" folder if the folder is redirected to a mapped network drive.

   [#LA4037]

3. This enhancement introduces a registry key that allows you to manually increase the performance of server-to-client file transfers on Windows 7 and Vista VDAs.

   Note: This enhancement might cause performance degradations for users connecting with versions of Receiver for Windows older than Citrix Receiver for Windows 3.4 Cumulative Update 2. If you plan to implement this enhancement, you must also:

   • Install server Fix #LA1263 on the same server.
   • Upgrade to Citrix Receiver for Windows 3.4 Cumulative Update 2 or its replacement for all users accessing the server.
   • Set the following registry key on the same server and then restart the server:

   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\picadm\Parameters 
   Name: SetMaxIOSize 
   Type: REG_DWORD 
   Data: 1

   [#LA4054]

4. Right-clicking the root folder of a mapped client drive fails to display the New menu option.

   [#LA4087]

5. Attempts to connect to a VDA might fail after a security scan or other software that authenticates to the VDA.

   [#LA4255]

6. Attempts to open a VM hosted app might fail. The issue occurs because the mmvdhost.exe process can exit unexpectedly during logon.

   [#LA4556]

7. After disconnecting from a touch optimized desktop (TouchOptimizedDesktop.exe) running on a non-English operating system VDA and logging on to the same physical VDA, TouchOptimizedDesktop.exe continues to be running.

   Note: For this fix to work, you must also install Fixes #LA4037 and #LA2562.

   [#LA4572]

8. When setting HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Citrix\wfshell\twi\SeamlessFlags = 0x20 (REG_DWORD) as described in Knowledge Center article CTX101644 on a XenDesktop VDA that provides VM hosted apps, client drive mapping and client printer mapping might fail in the VM hosted apps session.

   [#LA4713]

9. When setting the webcam video resolution to a value other than 352x288, the Webcam application might exit unexpectedly.

   With this fix, any resolution is supported as long as the webcam supports it. After applying this fix, set the desired resolution on the endpoint as follows.

   For example, to change the webcam video resolution to 640x480, set the following registry keys on the endpoint:

   HKEY_CURRENT_USER\SOFTWARE\Citrix\HDXRealTime
   Value: DefaultWidth
   Type: REG_DWORD 
   Data: 640

   HKEY_CURRENT_USER\SOFTWARE\Citrix\HDXRealTime
   Value: DefaultHeight
   Type: REG_DWORD 
   Data: 480

   Note: Citrix recommends that you also install and configure VDA Fix #LA5221.

   [#LA4773]

10. When switching back from a RemotePC session to the (physical) machineâ??s console, the audio volume setting might be set to zero. The issue is limited to instances of Remote PC Access running Windows XP.

    [#LA4943]

11. If the CANcaseXL USB network adapter is redirected into a virtual desktop, it appears to malfunction in Windows Device Manager. This USB device does not support the Citrix USB redirection driver. The VDA requires installation of Fix #LA5022 in order to work properly.

    [#LA5022]

12. Users can establish a Remote Desktop (RDP) connection to a VDA, even if they are not members of the Direct Access Administrators Group or Administrator group.

    [#LA5039]

13. Users can establish a Remote Desktop (RDP) connection to a VDA, even if they are not members of the Direct Access Administrators Group or Administrator group.

    [#LA5133]

14. When using  a GaoPaiYi  scanner, the associated third party software used to render or output the scan can exit unexpectedly. The issue occurs when an unsupported Theora output format is called.

    After installing this fix, you can set the following registry key to prevent the application from calling the unsupported Theora format:

    On 32-bit Windows:

    HKEY_LOCAL_MACHINE\Software\Citrix\HdxMediastream
    Name: TheoraOutput
    Type: REG_DWORD
    Data: 0

    On 64-bit Windows:

    HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Citrix\HdxMediastream
    Name: TheoraOutput
    Type: REG_DWORD
    Data: 0

    Note: Citrix recommends that you also install and configure VDA Fix #4773.

    [#LA5221]

15. COM port redirection can fail after upgrading Version 5.1 of VDI-in-a-Box to Version 5.3.

    [#LA5252]

16. This enhancement provides better performance when running VDAs on hosts with AMD or Intel graphics (for example, physical PC, pass-through GPU, or vGPU).

    [#LA5300]

17. Maximizing an application published on a desktop operating system can cover the endpoint's Windows taskbar in the VDA session.

    [#LA5331]

18. Attempts to open Microsoft Office files in a virtual desktop session might take a longer time to open. Additionally, when a published application is started and then minimized, it can no longer be restored or maximized from the taskbar.

    [#LA5342]

19. When using Microsoft Lync's chat feature on a mobile device, the soft keyboard can disappear unexpectedly.

    [#LA5371]

20. Attempts to shut down or restart a VDA from an endpoint with Desktop Lock enabled causes the endpoint to log off instead of shutting down or restarting.

    [#LA5526]

21. This enhancement increases the screen refresh rate on VDAs with the Citrix Windows XP Display Driver Mode (XPDM) display driver enabled from 56 Hz to 60 Hz.

    [#LA5624]

22. After a virtual desktop session reconnects, the VDI log on dialog box does not appear and Lync in the virtual environment is no longer paired with the Lync VDI plug-in.

    [#LA5736]

23. On VDAs running on a non-English language operating system, attempts to reconnect to a session that was disconnected from the Connection Center can fail.

    [#LA5739]

24. After reconnecting to a VDA session, the Windows Taskbar might disappear following certain user activities.

    [#LA5747]

25. The visual effects setting "Show shadows under mouse pointer" might change to "Show window contents while dragging" when disconnecting from and reconnecting to a VDA.

    With this fix, these settings do not change when users reconnect to a session.

    [#LA5861]

26. This fix addresses a security vulnerability. For more information, see Knowledge Center article CTX139591.

    [#LC0087]

27. This fix addresses a memory stability issue in the Citrix Audio Service. This issue occurs on a Lenovo ThinkPad 420 with the Conexant Audio driver, Version 8.32.23.5, which is configured as Remote PC Access and connects with Receiver.

    [#LC0194]

Smart Cards

1. After entering an incorrect smart card PIN when attempting to log on to a VDA, the PIN text box is not cleared automatically.

   [#LA4226]

System Exceptions

1. With the "Launch touch-optimized desktop" policy enabled for mobile devices, touch-optimized desktops (TouchOptimizedDesktop.exe) might exit unexpectedly upon launch.

   [#LA2562]

2. VDAs might experience a fatal exception, displaying a blue screen, on picadm.sys with bugcheck code 0x22 due to an access violation.

   [#LA4175]

3. The winlogon.exe process might exit unexpectedly on twi3.dll.

   [#LA4268]

4. A null pointer can cause the VDA to experience a fatal exception, displaying a blue screen, on monblanking.sys, with resulting data loss for the user.

   [#LA4791]

5. Even on systems with Fix #LA2882 installed, VDAs might experience a fatal exception, displaying a blue screen, on vdtw30.dll with bugcheck code 0x7F.

   [#LA4934]

6. The Citrix ICA Service (PicaSvc.exe) might exit unexpectedly due to a handle leak after several hours of working.

   [#LA4987]

7. This fix addresses an issue that cause a third-party application, Apollo, to exit unexpectedly when run on a system with Version 7.1 of the VDA installed.

   [#LA5401]

8. This fix addresses issues that can cause applications that use DirectX 7 along with deprecated texture stages to exit unexpectedly on vd3d.dll.

   [#LC0104]

9. On a Windows 7 computer, an error on a blue screen appears due to PICAVC.SYS referencing a null pointer.

   [#LA0139]

User Experience

1. Mouse pointer movements are not visible in the Lync conversation window if you share your virtual desktop.

   [#LA4942]

Miscellaneous

1. The HighAvailability setting configured under HKEY_LOCAL_MACHINE\Software\Citrix\VirtualDesktopAgent as described in Knowledge Center article CTX127564 fails to be read and the setting is not honored. With this fix, the setting is read as documented in Knowledge Center article CTX127564.

   [#LA4904]

VDA 7.5 for Windows Desktop OS

No fixes were included in Version 7.5 of the VDA for Windows Desktop OS.

VDA 7.1 for Windows Desktop OS

Desktop Studio	Session/Connection
HDX MediaStream Flash Redirection	Smart Cards
HDX MediaStream Windows Media Redirection	SmoothRoaming
Keyboard/Mouse	System Exceptions
Logon/Authentication	User Interface
Printing	Miscellaneous

Desktop Studio

1. Attempts to add a duplicate entry for an existing user under Desktop Studio > Assignments > Edit Desktop Group > Machine Allocation > Select Users appear to succeed initially but the user with the duplicate entry is, in fact, not assigned to the expected machine at all.

   [#LA3822]

2. Studio: Attempts to apply a hotfix to an existing base installation of Desktop Studio fail if the base installation was performed in a custom location; instead, the hotfix is installed in the default location at ...\Software\Citrix\DesktopStudio. Because Desktop Studio hotfixes install the full program, attempts to apply a hotfix to a base installation in a custom location result in the installation of an additional instance of Desktop Studio.

   [#LA4599]

HDX MediaStream Flash Redirection

1. With HDX Mediastream for Flash enabled, an access violation can occur while browsing multiple sites with Flash content in Internet Explorer and cause the Web browser to become unresponsive or exit.

   [#LA4227]

HDX MediaStream Windows Media Redirection

1. With HDX MediaStream Windows Media Redirection enabled, video playback might fail to work properly for streaming video.

   [#LA3345]

Keyboard/Mouse

1. When using the Receiver for LINUX and "KeyboardLayout=(Server Default)" is configured in the server side default.ica file, the session might default to an incorrect input method (other than the default IME). For additional information, see Knowledge Center article CTX135737.

   [#LA1970]

2. When using the Receiver for Linux in a virtual desktop session with the Japanese IME installed on the VDA, pressing the Caps Lock key once when the Japanese IME is turned on causes the Shift key not to work to enter uppercase letters.

   [#LA3299]

3. In console sessions on computers with the Remote PC feature installed, certain types of keyboard devices attached to the computer can be slow to respond to input.

   [#LA3527]

Logon/Authentication

1. Attempts by an endpoint to log on to a VDA can fail. The issue occurs in cases where the logoff process of an earlier session takes an exceptionally long time and the VDA is brokered for a new session prematurely.

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

   HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Citrix\PortICA
   Name: DelayLogoffNotificationEnabled
   Type: REG_DWORD
   Data: 1

   [#LA3405]

2. Attempts to reconnect to a VDA can get stuck as neither the Ctrl-Alt-Del screen nor the console can be accessed. The issue occurs if the session was previously disconnected by pressing Shift+D. Pressing the Shift key again resolves the issue.

   [#LA4352]

Printing

1. With a Windows XP endpoint connected to 64-bit Windows 7 VDA, attempts to print text within the session can produce garbled output. The issue occurs when a font that is present in the text is not installed on the endpoint.

   [#LA2941]

2. The last printer defined in the Session Printer policy might fail to map into the session as a UPS printer.

   [#LA3688]

3. The Citrix Print Manager Service (CpSvc.exe) process might exit unexpectedly.

   [#LA4020]

Session/Connection

1. With client time zone redirection enabled, the time zone while connected to XenApp and XenDesktop can be different from the client time zone.

   To address this issue in its entirety, you must install both VDA Fix #LA2621 (XD560VDAWX64400; XD560VDAWX86400 or their replacements) and Receiver for Android Fix #LA2621.

   [#LA2621]

2. The Virtual Desktop Agent can experience a deadlock when opening multiple tabs that contain Flash content in Internet Explorer.

   [#LA3664]

3. With HDX 3D Pro enabled, the NVIDIA card might not support certain resolutions. This enhancement introduces support of up to 2560x1600 pixel resolutions.

   [#LA4012]

4. Certain USB devices might successfully redirect in a XenDesktop session through USB device redirection. However, applications that interact with these USB devices through methods that do not completely confirm to MSDN guidelines, such as encryption applications that ship with the USB devices, might fail to recognize the devices.

   [#LA4224]

5. This compatibility enhancement extends support for HDX Plug and Play USB device redirection to additional USB devices.

   [#LA4335]

6. With HDX 3D Pro enabled, client connections to a XenDesktop 5.6 VDA do not support resolutions beyond 1900x1200 pixels. This enhancement introduces support for a wide range of additional resolution ratios, including:

   • 1920x1200
   • 2048x1152
   • 2560x1440
   • 2560x1600

   [#LA4340]

7. Third party device test tools might fail to operate on Pin Pad devices that are redirected through COM port mapping.

   [#LA4364]

8. Clicking Disconnect on a touch optimized desktop locks the VM and inadvertently prevents the user from reconnecting to the same session.

   [#LA4481]

Smart Cards

1. A NULL pointer can cause two-factor USB authentication for smart cards to fail.

   [#LA3910]

2. When trying to use a smart card within a published desktop to authenticate to a Web site using PKI, Internet Explorer might fail to prompt for PIN.

   To enable the fix, you must create the following registry key:

   HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\SmartCard
   Name: EnableCtxCleanup
   Type: REG_DWORD
   Value: 1

   [#LA4498]

SmoothRoaming

1. The SmoothRoaming feature intermittently fails to reconnect active or disconnected virtual desktop sessions on endpoints that have a different monitor configuration from the initial connection.

   [#LA3773]

System Exceptions

1. Citrix Desktop Service can fail to start on a system that has a group policy rollback file (rollback.gpf) of size zero bytes.

   [#LA0706]

2. Virtual Desktop Agents might experience a fatal exception, displaying a blue screen, on vdtw30.dll.

   [#LA2996]

3. The Citrix Print Manager Service (CpSvc.exe) process might exit unexpectedly.

   [#LA3984]

User Interface

1. Touch optimized desktops can display multiple taskbar icons for sticky notes.

   [#LA4235]

2. When clicking Disconnect in a touch optimized desktop, a logoff confirmation dialog appears instead of a disconnect confirmation dialog.

   [#LA4739]

Miscellaneous

1. On systems with Version 5.6. x of the VDA installed, attempts to install Microsoft Office 2013 fail with the following error message: "Microsoft Setup Bootstrapper failed to launch."

   Note: After installing this release, VDAs can experience a fatal exception, displaying a blue screen when running two or more Microsoft Office 2013 applications at the same in the same session. The issue occurs with the RTM and early versions of Office 2013. To prevent this issue from happening, upgrade to Version 15.0.4535.1002 or later of Office 2013.

   [#LA4655]

VDA 7 for Windows Desktop OS

HDX 3D Pro	Remote PC
HDX MediaStream Flash Redirection	Security Issues
HDX MediaStream Windows Media Redirection	Server/Site Administration
HDX Plug and Play	Session/Connection
HDX WMI Provider	Smart Cards
Keyboard	System Exceptions
Logon/Authentication	User Experience
	Miscellaneous

HDX 3D Pro

1. When maximized, applications published on an HDX 3D Pro enabled VDA cover the taskbar.

   [#LA2174]

2. After reconnecting to an HDX 3D Pro enabled Virtual Desktop Agent whose monitor is configured to switch off after a specified amount of time, 3D animations running in OpenGL applications can fail to render. Instead, a gray box appears in their place.

   [#LA2315]

3. This fix addresses an issue that can cause the audio service (CtxAudioService.exe) to exit unexpectedly in HDX 3D Pro sessions.

   [#LA2744]

4. The PICA Display Manager (PicaDispMgr.exe) running in HDX 3D Pro enabled sessions on Windows 7 VDAs can spike the CPU to over 30% even when the session window is minimized or otherwise idle.

   [#LA2938]

5. Attempts to reconnect to an HDX 3D Pro enabled session can fail and users are presented with a black screen.

   [#LA3508]

HDX MediaStream Flash Redirection

1. A Web application can exit unexpectedly when HDX MediaStream Flash Redirection is enabled, pointing to PseudoServerInproc.dll.

   [#239137]

2. Important: Before applying this fix on a client device, see Knowledge Center article CTX126817 for important information about how the Dynamic Blacklist feature might affect client-side Flash redirection.

   Server-side content fetching can exhibit poor performance in restrictive WAN conditions due to the lack of flow control in the Flash Virtual Channel. This fix corrects the flow control for the Flash Virtual Channel and provides smooth playback of Flash objects. For information about configuring server-side content fetching, see http://support.citrix.com/proddocs/topic/xendesktop-als/hd-flash-configure-server-ad.html.

   To enable this fix in its entirety, you must install both a client hotfix that contains Fix #LA0686 and:

   • For XenApp: an HDX Flash hotfix that contains Fix #LA0686
   • For XenDesktop: a Virtual Desktop Agent hotfix that contains Fix #LA0686

   [#LA0686]

3. With server-side content fetching enabled, Flash content can take unexpectedly long (up to six minutes) to start rendering in the session.

   [#LA1149]

4. On systems with Fix #LA0307 installed, attempts to open URLs from an email message in a published instance of Microsoft Outlook might fail. Specifically, when an email message in published Outlook contains two links, clicking the first link launches Internet Explorer as expected, but the other link fails to open.

   [#LA1363]

5. Important: Before applying this fix on a client device, see Knowledge Center article CTX126817 for important information about how the Dynamic Blacklist feature might affect client-side Flash redirection.

   In scenarios where the Enable server-side content fetching policy is enabled on the server and the Flash server-side content fetching URL list setting is configured for the Flash Redirection policy on the client, attempts to play Flash content fail if the URL to the content contains multibyte/unicode characters such as those common in Asian languages

   To enable this fix in its entirety, you must install both a client hotfix that contains Fix #LA1621 and:

   • For XenApp: an HDX Flash hotfix that contains Fix #LA1621
   • For XenDesktop: a Virtual Desktop Agent hotfix that contains Fix #LA1621

   Note: This fix also requires the corresponding language code pages to be installed on both the client and the server. The code pages are installed by default by the Windows operating system. For example, the Japanese distribution of Windows 7 installs the Japanese code pages by default. However, if you are using a URL with Japanese characters on an English distribution of Windows 7, the Japanese code pages must be installed explicitly. This applies to both the client and the server because the URLs are transferred from the client to the server when server-side content fetching is enabled.

   [#LA1621]

6. With HDX MediaStream Flash Redirection enabled, Web sites with Flash content can experience delays of up to 10 seconds to load.

   [#LA1962]

7. Microsoft Internet Explorer might exit unexpectedly, referencing pseudoserverinproc2.dll, with certain types of Flash content on Web pages.

   [#LA1979; #LA2151]

8. The HDX MediaStream Flash Redirection feature might fail to work. The issue occurs when the short path expansion is disabled on the server, which prevents hdxflashhook.dll from loading pseudoserverInprocloader.dll.

   [#LA2945]

9. This fix improves load times of Flash videos when HDX MediaStream Flash Redirection is enabled.

   [#LA3232]

10. When launching a Web page that uses certain ActiveX components with HDX MediaStream Flash Redirection enabled, Internet explorer might exit unexpectedly.

    [#LA3294]

11. After installing the latest version of Adobe Flash Player and attempting to play Flash videos, Internet Explorer might incorrectly display the following error message even if the correct version is installed:

    "You need Adobe Flash Player to watch this video."

    [#LA3475]

HDX MediaStream Windows Media Redirection

1. Third party multimedia applications using the HDX MediaStream Multimedia Acceleration feature might exit intermittently.

   [#LA1769]

2. The Citrix audio DMO filter currently does not support audio format conversion and prevents some applications from converting audio formats correctly. This fix introduces a registry key that lets you disable the Citrix audio DMO filter for a list of applications you specify:

   • On 32-bit Windows:

     HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\HdxMediaStream
     Name: DisabledExecutables
     Type: REG_EXPAND_SZ
     Data: <List of applications to be excluded>

   • On 64-bit Windows:

     HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432node\Citrix\HdxMediaStream
     Name: DisabledExecutables
     Type: REG_EXPAND_SZ
     Data: <List of applications to be excluded>

   [#LA2359]

3. When connecting to a VDA, multimedia redirected audio can fail for certain thin clients. This issue occurs with those thin clients that lack a head-end mixer for the audio subsystem. The problem arises from the VDAâ??s behavior of forcing the audio playback device open upon connection and not automatically closing it. This, in turn, can prohibit access to the audio device by multimedia redirection.

   This fix corrects the issue for VDAs running on non-Windows XP operating systems by suppressing automatic opening of the playback device. To correct the issue for VDAs running on Windows XP, you must set the following registry key:

   • On 32-bit Windows:

     HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\GroupPolicy\Default\AudioSettings
     Name: EnableForcedDeviceOpenOnXPHost
     Type: REG_DWORD
     Data: <0 (suppress automatic opening of playback device ); 1 (enable automatic opening of playback device)>

   • On 64-bit Windows:
     

     HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432node\Citrix\GroupPolicy\Default\AudioSettings
     Name: EnableForcedDeviceOpenOnXPHost
     Type: REG_DWORD
     Data: <0 (suppress automatic opening of playback device ); 1 (enable automatic opening of playback device)>

   [#LA2526]

4. This fix addresses an issue than can cause the video portion of a multimedia file to trail the audio portion slightly when rendering.

   [#LA2694]

5. With Windows Media Redirection enabled, videos fail to play after the following sequence of user actions: Play > Pause > Seek > Play.

   [#LA2947]

6. When playing video files in Windows Media Player with Windows Media Redirection enabled, Windows Media Player might become unresponsive while double-clicking the Windows Media clip.

   [#LA3255]

HDX Plug and Play

1. When reconnecting to a virtual desktop session, any USB optical drives attached to the endpoint are mapped into the reconnected session. This happens if optical drives are permitted in the file redirection policies but USB redirection is disabled.

   [#LA1210]

2. When playing video files in Windows Media Player with Windows Media Redirection enabled, the Mute function might fail to work after the following sequence of user actions: Play > Pause > Mute > Play.

   [#LA2241]

HDX WMI Provider

1. Poor performance is experienced when querying the HDX WMI Provider for specific session data on a XenApp server with 50 or more open sessions. Note: To address this issue in its entirety, you must install both a Desktop Director and an HDX WMI Provider hotfix that contains Fix #LA0563.

   [#LA0563]

Keyboard

1. This enhancement introduces support for the AhnLab Korean keyboard.

   [#LA3235]

Logon/Authentication

1. Attempts to connect to a Virtual Desktop Agent can fail and the following error message appears: "Error: You are not permitted to restart any more sessions for this resource." The issue can occur when a user logs on to the agent console just after the agent restarts. In that case, a race condition can prevent attempts to connect to the agent remotely.

   [From XD550VDAWX86100][#LA0664]

2. If a smart card is present in the card reader at the client device, the smart card PIN prompt can fail to appear. The issue occurs when a legal notice banner is configured and the user does not dismiss (accept) the notice within four seconds of its appearance. In such scenarios, the PIN prompt does not appear as the wait for the smart card event times out. This fix introduces support for the following registry key to extend the amount of time, in seconds, before a timeout on the smart card event occurs:

   HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\SmartCard
   Name: SSEEETimeout
   Type: REG_DWORD
   Data: <Range of 4-120 (decimal) >

   With the above registry key set, the application launches properly if the user dismisses the interactive logon message within 40 seconds; otherwise the application exits after providing the smart card PIN. To prevent this and give users up to 120 seconds to respond to the PIN prompt, additionally set the following registry key:

   HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Citrix\wfshell\TWI
   Name: LogoffCheckerStartupDelayInSeconds
   Type: REG_DWORD
   Data: <An integer for the length of time to wait for application start. - Enter the delay time in seconds, up to 10 minutes (600 seconds), but no less than the value configured for SSEEETimeout above.>

   [#LA2272]

Remote PC

1. This enhancement to Remote PC ensures that the smart card credentials tile rather than the LDAP credentials tile is selected by default when logging on a to a remote PC using a smart card for authentication. After the installation this enhancement is enabled by default. To disable it, you must set the following registry key:

   HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\PortICA\DefaultCredentialProvider
   Name: DisableDefaultCredentialOverride
   Type: REG_DWORD
   Data: 1

   [#LA2209]

Security Issues

1. This fix addresses a weakness in the XenDesktop product. For more information, see Knowledge Center article CTX135813.

   [From XD560VDAWX64200][#LA1240]

Server/Site Administration

1. After upgrading from Version 4 of the VDA to a newer version, the Citrix-Multimedia-Flash log is no longer visible in the Event Viewer. This issue occurs on agents running on Windows 7 and Windows Vista.

   [#LA2098]

Session/Connection

1. When clicking the clock in the notification area of a Windows 7 VDA from a Wyse Xenith terminal, the following error message appears:

   "Your current time zone is not recognized. Please select a valid time zone using the link below."

   [#257890]

2. Pooled desktops can restart without honoring the LogOffActionDelay wait interval set in the [appSettings] section of the CdsPoolMgr.exe.config file. As a result, there might not be sufficient time for any logoff scripts to run and finish.

   After applying this fix, when a user logs off a session, a pooled desktop waits for the time interval specified  in the LogoffActionDelay  setting and then restarts. The default wait interval is 420 seconds (7 minutes). To change this value, add the following entry to the [appSettings] section of the CdsPoolMgr.exe.config file located at C:\Program Files\Citrix\VmManagement:

   <add key="LogOffActionDelay" value="xyz"/> , where xyz is the wait interval, in seconds, and then restart the Pool Management Service.

   For more information about troubleshooting XenDesktop, Provisioning Services & XenServer integration, see Knowledge Center article CTX125180.

   [#LA0449]

3. When reconnecting to a disconnected session, previously visible mapped network drives are no longer visible in Windows Explorer.

   [#LA1514]

4. The Dependencies tab of the Citrix Desktop Service Properties (Local Computer) window lists four system component dependencies, including a Server component dependency. The Server component dependency is present in error. This fix removes the inaccurate Server listing.

   [#LA1655]

5. When launching an application from a client mapped drive, the application can launch successfully, but fail to have network connectivity.

   [#LA1668]

6. When reconnecting to a disconnected virtual desktop session, a hidden window created by Adobe Reader might be displayed as a blank window.

   [#LA1746]

7. Attempts to connect to Version 4 of the VDA running on Windows XP might fail during the logon process, displaying only the desktop screen.

   [#LA1864]

8. Sessions can disconnect unexpectedly, and the disconnect is incorrectly reported as an SSL error on the client, server, or the Secure Gateway.

   To correct these issues, you must install hotfixes that contain Fix #LA2017 for both XenApp and for XenDesktop.

   [#LA2017]

9. Attempts by an endpoint device to reconnect to a disconnected VDA might fail indefinitely until the VDA is restarted.

   [#LA2210]

10. Clicking a published desktop icon multiple times in rapid succession on the Web Interface can eventually cause the launch of the desktop to fail.

    To enable this fix in its entirety, you must install both a Broker hotfix and a VDA hotfix (XD560VDAWX86300; XD560VDAWX64300, or their replacements) that contains Fix #LA2255.

    [#LA2255]

11. Attempts to reconnect to a VDA running on Windows XP might fail with a black screen until the agent is restarted. Also, the session window might revert to the size of the previous connection rather than being full-screen.

    [#LA2317]

12. The Group Policy engine (CitrixCseEngine.exe) process can cause the CPU to spike unexpectedly and prevent logons to virtual desktops. To enable this fix, you must install both a Group Policy Client side Extension and a VDA hotfix that contains Fix #LA2544.

    [#LA2544]

13. Following a ticket validation failure, a pooled VDA running on Windows 7 might become inaccessible until the agent is restarted.

    [#LA2564]

14. This feature enhancement to the HDX Plug-n-Play USB Device Redirection feature of XenDesktop allows the IgnoreHWSerNum<VID><PID> USB registry key feature of Windows to function as expected with redirected USB devices.

    [#LA2590]

15. This fix addresses the following issues users can experience when HDX Windows Media redirection is disabled by way of the associated policy (HDX Policy > Machines > Windows Media Redirection):

    • Seek is not working properly
    • Video becomes unresponsive after Play > Pause > Play operations

    [#LA2695]

16. When disconnecting from a multiple monitor Remote PC VDA, the resolution on all monitors attached to that VDA decreases to the largest resolution supported by the lowest-capacity monitor. For example: If Monitor 1 is set to 1280x1024 and Monitor 2 to 1024x768, both monitors display at a resolution of 1024x768 after disconnecting from the session.

    [#LA2752]

17. When a user logs on, the Citrix Group Policy Engine (CitrixCseEngine.exe) can cause the CPU to spike to 100% for an excessive amount of time while performing Group Policy checks.

    With this fix, the CPU time of the Group Policy engine (CitrixCseEngine.exe) process is reduced significantly.

    [#LA2903]

18. Attempts to reconnect to a disconnected session can fail. The issue occurs in cases where the PicaSessionMgr.exe process exits unexpectedly when a user first logs on to a virtual desktop session.

    [#LA3490]

19. When reconnecting to a disconnected virtual desktop session, dialog boxes might disappear while the associated parent window is minimized.

    [#LA3531]

20. Seeking forward or backward in Windows Media Player can cause a black rectangle to appear in place of the video.

    [#LA3538]

21. When launching a session immediately after disconnecting from a VM hosted app, the session might start and then log off shortly thereafter.

    [#LA3695]

Smart Cards

1. When using smart card authentication, sites in the Intranet zone do not prompt for credentials and fail to load if protected mode is enabled for the Intranet zone. To enable this capability, you must set the following registry key:

   On 32-bit Windows:

   HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\SmartCard
   Name: SupLowIntegrityProc
   Type: REG_DWORD
   Data: 1

   On 64-bit Windows:

   HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Citrix\SmartCard
   Name: SupLowIntegrityProc
   Type: REG_DWORD
   Data: 1

   [#LA1731]

System Exceptions

1. At times of heavy logon/logoff activity, one or more of the following can be observed:

   • Applications can exit unexpectedly.
   • During logon attempts, an Error 1030 appears on the endpoint.
   • During logoff attempts, the Virtual Desktop Agent returns to the Logon screen and the endpoint continues to display the Desktop Viewer.

   [#LA0388]

2. Accessing certain Web sites with Internet Explorer and HDX MediaStream for Flash enabled can cause the Web page to become unresponsive, displaying only a cyan background.

   [#LA0645]

3. HDX MediaStream Flash redirection does not work for any site when the "Flash URL compatibility list" policy is enabled and a site is added to the list - regardless whether it specified to render on the server, on the client, or to be blocked.

   [#LA1077]

4. VDAs might experience a fatal exception (DRIVER_IRQL_NOT_LESS_OR_EQUAL), on TCPIP.SYS with bugcheck code D1.

   [#LA2054]

5. Attempts to reconnect from a different endpoint can cause the Citrix Audio Service (CTXAudioService.exe) to exit unexpectedly. Repeat attempts can cause the agent to experience a fatal exception, displaying a blue screen.

   ][#LA2719]

6. In an RDP session running on a computer or VM with a VDA installed, the picaDisplayMgr.exe process can continually start and exit, eventually spiking the CPU. An instance of the same process running in the local console session does not exhibit the issue.

   [#LA2746]

7. Certain types of mouse pointer activity can cause Virtual Desktop Agents to experience a fatal exception, displaying a blue screen, on VDTW30.dll.

   [#LA2882]

8. When there is a large number of process names defined under HKEY_LOCAL_MACHINE\Software\Citrix\Ica\Thinwire\DisableOssForProcesses, VDAs can experience a fatal exception on vdtw30.dll shortly after a session launches.

   [#LA2917]

User Experience

1. After reconnecting to a Windows 7 full-screen VDA from a multiple-monitor endpoint, the original positioning of windows across monitors is not retained. Instead, all windows previously positioned on the secondary monitor are positioned on the primary monitor. The issue is related to the Citrix WDDM driver, which installs by default on Windows 7 as part of the VDA installation.

   [#LA2355]

Miscellaneous

1. A lock contention can cause the WorkstationAgent.exe process to consume up to 60% of the CPU and up to 500MB of RAM.

   [#254245]

2. After making an RDP connection to a VDA, client connection attempts no longer succeed.

   [#LA2246]

3. Note: This fix applies only to XenDesktop deployments that utilize Branch Repeater for traffic optimization.

   This fix enables the Auto Client Reconnect functionality of XenDesktop for deployments that utilize Branch Repeater appliances for traffic optimization. With this fix Auto Client Reconnect is used for session recovery instead of Session Reliability.

   Enabling this functionality:

   To enable this fix, you must upgrade to Citrix Receiver for Windows 3.4 Cumulative Update 1 (limited release) and take steps at the Broker, the VDA, and the Web Interface site as follows.

   What you need to do on the Broker:

   You must enable the following policies on the Broker:  

   Session Reliability:

   Session Reliability Connection = Enabled ( Required)

   Session Reliability Port Number = 2598 (default)

   Session Reliability Timeout = 180 seconds (default)

   Auto Client Reconnect:

   Auto Client Reconnect = Enabled ( Required)

   Auto Client Reconnect Authentication = Do not require authentication (default)

   Auto Client Reconnect Logging = Do not log auto reconnect events (default)

   What you need to do on VDAs :

   In scenarios where VDAs are experiencing heavy CPU loads, processing, or network-related delays, Auto Client Reconnect might take longer to initialize and therefore time out before it succeeds. To increase the VDAâ??s wait time for Auto Client Reconnect to succeed, modify the following registry key:

   HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\XTEConfig 
   Name: CgpListenerTimeout 
   Type: REG_DWORD 
   Data: 0-60 (wait time in seconds; default=5)

   What you need to do at the Web Interface site:

   When you install XenDesktop, it creates the necessary Web Interface sites that are used by the deployment.  The meta-installer creates the sites and adds two values that you must tweak for this new functionality to work. The settings requiring to be tweaked live in the Default.ica file, see below for details.

   You must verify or set the following parameters on the Web Interface site:

   1. Open the default.ica file for the XenDesktop site where the Auto Client Reconnect functionality is enabled. Its default location is c:\InetPub\WWWRoot\Citrix\<sitename>\Conf on the Broker.
   2. Modify the following settings as follows:    

   TransportReconnectEnabled=ON, default is OFF. If set to OFF, this functionality will not work.

   SessionReliabilityTTL=180*, default is 60.

   * Note (SessionReliabilityTTL):  Tweak this value to match the Session Reliability Time-Out machine policy (default 180).  Otherwise, Citrix Receiver and the VDA get into out of sync condition and Auto Client Reconnect will fail.

   Disabling this functionality:

   This functionality is enabled even without the presence of this key but only works in Branch Repeater deployments. To disable this functionality and revert to the previous behavior, you must set the following registry key on VDAs:

   HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\XTEConfig 
   Name: CgpDisableBranchRepeaterSessionReliability 
   Type: REG_DWORD 
   Data: 0 (enabled; default); 1 (disable)

   Known Issues:

   • Flash Redirection: After Auto Client Reconnect completes, a black area displays in place of Flash animations. To recover from the condition, refresh or restart the browser.
   • Windows Media Redirection: After Auto Client Reconnect completes, a black area displays in place of the Windows media content. To recover from the condition, restart Windows Media Player and the video playing before disconnecting. After restarting the video, it begins playing from the start

   [#LA3473]