Fixed issues

Citrix Receiver for Windows 4.9 LTSR CU4

Compared to: Citrix Receiver for Windows 4.9 LTSR CU3

Client Device Issues

  • By using the Automatic keyboard display policy set to enabled, auto soft keyboard popup might not work in a session. [LC9925]

HDX MediaStream Windows Media Redirection

  • The redirected multicast streams that contain embedded scripts might fail to fetch content from the client. A black screen appears in place of the video. [LC9775]

Keyboard

  • Before this fix was introduced, the Bloomberg model 4 Starboard keyboard supported only the PC mode. With this fix, the Bloomberg model 4 Starboard keyboard supports PC and KVM modes. [LC9984]

Logon/Authentication

  • When using Citrix Receiver for Windows to add an account, typing the store URL might result in the following error message: The Authentication Service could not be contacted. The issue occurs when a StoreFront URL begins with the text string citrix.com. [LC9631]

Session/Connection

  • With KEYWORDS:Prefer configured from Citrix Studio, the command-line switch or the argument that is mentioned in the application shortcut on the local user device might not be honored. [LD0060]

  • This fix performs the following changes:

    • When you customize edtMSS and OutBufLength, the edtMSS overrides OutBufLength.
    • Changes the parameter names from udt* to edt* in All_regions.ini, defaulit.ica file, and registry.

    Note: After an upgrade as an administrator, the user registry key and entries are not renamed from udt* to edt* under the registry key HKEY_CURRENT_USER\SOFTWARE\Citrix\ICA Client\Engine\Lockdown Profiles\All Regions\Lockdown\Network\UDT. Additionally, the parameter value is not retained. [LD0098]

  • The stores added through the Group Policy Object (GPO) might not be removed even when you update or remove the store in the GPO. [LD0147]

System Exceptions

  • Citrix Receiver for Windows might exit unexpectedly when you log on to a store. [LC8271]

  • Citrix Receiver for Windows might exit unexpectedly and this error message appears: Citrix HDX Engine has stopped working.

    The issue occurs when there is a trap in the graphics module. [LC9466]

  • The wfica32.exe process might exit unexpectedly when you log off the system. [LC9892]

TWAIN

  • Citrix Receiver for Windows 4.7 or later versions might fail to redirect the scanners. The issue occurs when the Twain 2.0 drivers are not present on user device. [LC8215]

User Experience

  • When you establish a VPN connection using certain third-party applications, Citrix Receiver for Windows might remain in an unusable state for about 15 minutes. [LC9302]

  • When you connect to a Linux VDA 7.17 or later versions from Citrix Receiver for Windows, the GPU usage of Citrix HDX Engine might be high. [LC9506]

  • When you use the Japanese Input Method Editor (IME) and input text in an application that is in seamless mode, the text might not be visible. The issue occurs when the font size of the text is small.

    To enable the fix, set the following registry keys:

    • On 32-bit systems:

      HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\ICA Client

      Name: DisableD3DRenderWidthHeightCheck

      Type: REG_DWORD

      Value: 1

    • On 64-bit systems:

      HKEY_LOCAL_MACHINE\SOFTWARE\Wow 6432Node\Citrix\ICA Client

      Name: DisableD3DRenderWidthHeightCheck

      Type: REG_DWORD

      Value: 1 [LC9882]

User Interface

  • The Configuration Checker, which validates the Single Sign-on configuration, might fail to complete the validation process and becomes stuck verifying the Single Sign-on process. [LC9625]

Citrix Receiver for Windows 4.9 LTSR CU3

Compared to: Citrix Receiver for Windows 4.9 LTSR CU2

Client Device Issues

  • Certain DVD videos might not play inside a session through a mapped client drive. [LC8912]

Content Redirection

  • When you redirect bidirectional content to a VDA, a second URL opens on a new browser when the browser is already open. [LC9157]

  • Applications and icons might partially associate with file types when using Citrix Receiver for Windows with Citrix XenApp Services Site. [LC9402]

Installing, Uninstalling, Upgrading

  • When you upgrade Citrix Receiver for Windows through System Center Configuration Manager (SCCM), Receiver for Windows might request a system restart. [LC9706]

Keyboard

  • Attempts to use the server default or the desired keyboard layouts using APPSRV.INI or ICA files that is downloaded from the StoreFront might fail.

    The following are the limitations in this scenario:

    • You must set the keyboard layout manually in the session through the control panel when configuring for the first time even though you have set the layout previously.
    • You must set the keyboard layout synchronization from Advance Preferences to No. If you set the layout to Yes, the local IME is redirected. [LC9593]

Logon/Authentication

  • After the AuthManSvr.exe process restarts, attempts to log off from Citrix Receiver for Windows fails. [LC7981]

Printing

  • When you attempt to print large documents using the PDF writer as the printing preference, the printer might become unresponsive or this error message might appear:

    “Emf viewer has stopped working.” [LC8882]

Session/Connection

  • The desktop might disappear soon after you start the desktop. The issue occurs because of the duplicate TLS packets sent from Citrix Receiver for Windows. [LC8724]

  • When you attempt to start a desktop using Microsoft Internet Explorer 11, this error message might appear:

    “The connection to failed with status (Unknown client error 0)" [LC8841]

  • When you setup aggregation between two sites in StoreFront, the pre-launch session is not created. [LC8847]

  • In a double hop scenario with VDA for Desktop OS in the first hop and an application in the second hop that is started within a VDA, upon reconnecting to the first hop that is running VDA for Desktop OS, the screen might flicker for a few seconds. [LC9071]

  • Attempts to start desktops using Citrix Receiver for Windows might time out after a short period and fail. The issue occurs even after increasing the launch timeout value through the StoreFront setting LaunchTimeoutMs. [LC9369]

  • After changing the internal beacon point in StoreFront, you might not be able to start applications from Citrix Receiver for Windows until you restart Citrix Receiver. [LC9442]

  • When you switch between multiple published applications using the Win+Tab or Alt+Tab keys, the GDI objects might increase on the client until the applications become unresponsive and display black pixels. [LC9655]

Smart Cards

  • When you attempt to start a published desktop in full screen mode using smart card authentication, the PIN prompt might not appear on the Desktop Viewer. [LC8579]

System Exceptions

  • The wfica32 process might exit intermittently when using a touch-enabled device to connect to a VDA. [LC9228]

  • The wfica32.exe process might exit intermittently. [LC9397]

User Experience

  • Citrix Receiver for Windows application window might appear automatically even if you have not opened the application. The issue occurs when the administrator removes or disables any published application from Citrix Studio. [LC8176]

  • The Start menu and taskbar icons might flicker when you refresh the applications within Citrix Receiver for Windows. [LC8890]

  • The mouse cursor is missing, or appears to be small, within the Citrix Receiver for Windows session. This might occur when using multiple monitors with different DPI on endpoints that are running on Microsoft Windows 10. [LC8915]

  • The mouse cursor might appear to be smaller than the normal size within the Citrix Receiver for Windows session. This issue might occur when using a high resolution display on the endpoints that is running Version 1607 of Microsoft Windows 10 and later.

    The following are the limitations in this scenario:

    • The mouse pointer becomes small when you left-click in reverse seamless mode. It becomes normal when you release the click.
    • The mouse pointer becomes enlarged slightly with low resolution when running on VDA for Desktop OS and VDA for Server OS that is earlier to Version 1607 of Windows 10 and Windows Server 2016.
    • In a multi-monitor scenario, when the DPI of the monitors is different, the mouse pointer fails to scale correctly. The issue happens when the window is moved across monitors and can be corrected by resizing the application window.
    • The mouse pointer still appears small on the Desktop Viewer on launched desktops. [LC9221]
  • This fix addresses minor performance and quality improvements for Enlightened Data Transport (EDT). [LC9417]

Citrix Receiver for Windows 4.9 LTSR CU2

Compared to: Citrix Receiver for Windows 4.9 LTSR CU1

Client Device Issues

  • During a Voice over Internet Protocol (VOIP) call, if user1 launches a published sound recorder application and starts recording, the microphone audio from user1 is no longer heard within the call. user1 can hear user2. [LC8713]

HDX MediaStream Flash Redirection

  • With the HDX MediaStream Flash Redirection setting enabled, the PseudoContainer2.exe process might exit unexpectedly when you disconnect the session. [LC8802]

HDX MediaStream Windows Media Redirection

  • When sending messages using certain third-party applications, a notification alert is not heard. This fix provides improved support for sounds that play for a short period. [LC8468]

HDX Seamless Local Apps

  • Attempts to start applications might fail when using the local app access feature “KEYWORDS:prefer=”pattern” with any 64-bit applications that needs to be configured while launching. [LC8580]

Installing, Uninstalling, Upgrading

  • After you upgrade Citrix Receiver for Windows, certain registry keys that are required for custom virtual channels might be removed. [LC8414]

  • After the Citrix Receiver for Windows auto update installation, the Auto-update install command-line switch might not be preserved. As a result, the auto update configuration is set to the default option. [LC9103]

Session/Connection

  • Attempts to launch a session might fail with the following error message:

    “The ICA file contains an invalid unsigned parameter.”

    Before you upgrade or replace the new ADMX file, set the ICA file signing related policy “Enable ICA File Signing” to “Not configured.”

    Note: Fix LC5338 works with StoreFront 3.0.4000, StoreFront 3.9 and later versions. [LC5338]

  • When you launch the selfservice.exe process from Citrix Receiver for Windows on the first hop of VDA for Server OS, disconnecting the first hop can cause certain third-party applications or Windows Task Scheduler to run “SelfService.exe –disconnectapps” to disconnect the second hop upon disconnecting the first hop. When you reconnect to the first hop, “SelfService.exe –reconnectapps” is run to reconnect to the second hop upon reconnecting the first hop. In this scenario, Citrix Receiver for Windows might appear in the foreground instead of appearing in the background and the reconnected applications appear in the background. [LC8224]

System Exceptions

  • The wfica32 process might exit intermittently when using the Mobile Receiver virtual channel. [LC8526]

  • User sessions might exit unexpectedly when using biometrics authentication of the Bloomberg keyboard. [LC8766]

  • User sessions might exit unexpectedly when you use a Bloomberg keyboard fingerprint scanner device inside the session that is redirected through USB redirection. [LC8928]

User Experience

  • When using the customized phrase feature on the Input Method Editor (IME) language bar, certain characters might randomly get dropped in a user session. [LC6155]

  • Shortcuts of streaming applications that are created manually on the desktops and taskbar are deleted. [LC7500]

  • When you start Citrix Receiver for Windows, the Start menu and desktop shortcuts might flicker if the subscribed applications contain icons with bpp=4 in the Receiver Self-Service window. [LC8480]

  • When certain third-party applications attempt to send a large number of characters to a session with HDX seamless apps enabled, only a few characters might be sent to the application instead of all the characters. [LC8560]

  • When a published desktop is launched in full-screen mode from a Windows 7 client machine, playing a redirected Flash video can cause the applications that are set to Always on top to appear over the desktop viewer window. The fix is disabled by default.

    To enable the fix, set the following registry keys:

    • On 32-bit systems:

      HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\XenDesktop\DesktopViewer

      Name:PreventAlwaysOnTopWindowPopover

      Type: DWORD

      Value: 2; to disable the fix, set the registry key value to 0 or remove the registry key.

    • On 64-bit systems:

      HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Citrix\XenDesktop\DesktopViewer

      Name:PreventAlwaysOnTopWindowPopover

      Type: DWORD

      Value: 2; to disable the fix, set the registry key value to 0 or remove the registry key. [LC8616]

  • When you refresh applications in Citrix Receiver for Windows, the Microsoft Outlook application icons that were manually pinned to the taskbar might disappear. [LC8785]

User Interface

  • Applications might not appear in the Start menu when you change the Settings Option in Citrix Receiver for Windows and configure StoreFront with the Disable User Subscriptions (Mandatory Store) setting for the store. [LC8648]

Citrix Receiver for Windows 4.9 LTSR CU1

Compared to: Citrix Receiver for Windows 4.9 LTSR

Client Device Issues

  • Devices such as a keyboard, mouse, or a monitor connected to a docking station or a USB hub cannot be used. The issue occurs when the user session is in full-screen mode or if the session window is in focus and if you connect the docking station or the hub to a client machine after starting the user session. [LC8295]

Content Redirection

  • File type association might not work when you log on to Citrix Receiver for Windows using a roaming profile. [LC8042]

HDX RealTime

  • When multiple webcams of the same model are installed on the VDA, only the latest webcam might be recognized by the session and mapped. With the fix, multiple webcams that are the same model can be used in any video conference application inside a session.

    Note:

    • With Fix LC5008 installed, you might not be able to switch webcams from the “Preferences” tab.
    • To enable this fix, you must install both a server and a client hotfix that contains Fix LC5008. [LC5008]

Session/Connection

  • When attempting to launch Microsoft Internet Explorer as a different user than the currently logged in user using the “Run As” command and with the Redirector.exe process running on the system, the browser might launch but content does not load for about 20-30 seconds. [LC5227]

  • Attempts to launch a desktop using Mozilla Firefox might fail. The issue occurs when the desktop viewer fails to delete a previously created ICA file from the temporary directory of Internet Explorer. This results in an “Access denied” error that prevents the copying of the ICA file when you launch a new session. [LC7883]

  • When you launch an application from the Start menu or the desktop shortcut, the application might launch but the following error message appears:

    “Cannot find this file, Please verify that the correct path and file name are given.” [LC8253]

  • With Citrix Receiver for Windows 4.8 installed, certain features of an employee web portal might not function properly. However, when the Citrix ICA Client ActiveX control is disabled within Microsoft Internet Explorer, the website functions properly. [LC8428]

System Exceptions

  • Citrix Receiver for Windows might exit unexpectedly with the following error message:

    “Citrix HDX Engine has stopped working” [LC8040]

  • Citrix Receiver for Windows 4.8 might experience a fatal exception, displaying a blue screen. The issue occurs when you restart the system using certain multifunction keyboard models and plug and unplug the keyboard multiple times from the system. [LC8182]

  • After removing the headphones from a user device while an audio file is playing, the session might become unresponsive until you disconnect and reconnect the session. [LC8243]

  • When you use the keyboard shortcut “Alt+Enter” in a published seamless application, the wfica32.exe process might exit unexpectedly. [LC8317]

  • In a double-hop scenario, the wfica32.exe process might exit unexpectedly when you switch a session between clients. [LC8354]

User Experience

  • When you record sound with audio quality set to high, the quality of the sound recording might be poor. [LC8241]

  • When you restore a seamless window from full-screen to its original size in a multi-monitor environment and then drag it back across monitors in order to view the entire application, the window might be clipped incorrectly. As a result, only a partial window is visible. The issue occurs with seamless windows that are wider than the monitor and thus partially off-screen. [LC8325]

  • When you configure shortcut options in the Store web.config file, published application shortcuts might disappear from the Start menu and desktop.

    Note: This fix provides a complete fix for Fix LC7577. [LC8391]

  • When launching a session in seamless mode while using Epic Hyperspace, the application might not allow other applications that are running locally on an endpoint to appear in the foreground. The Epic Hyperspace application might retain the foreground focus until you minimize it. [LC8462]

  • When you connect to a published desktop, blank areas might appear on the desktop that change when resizing the window. This error occurs when using legacy graphics mode. [LC8518]

Citrix Receiver for Windows 4.9 LTSR

Compared to: Citrix Receiver for Windows 4.8

HDX 3D Pro

  • With HDX 3D Pro enabled on a VDA, using certain third-party applications can cause the VDA to disconnect.

    To enable the fix, set the following registry keys:

    • On 32-bit Windows:

      HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\ICA

      Client\Engine\Configuration\Advanced\Modules\Thinwire3.0

      Name: Tw2IgnoreValidationErrors

      Type: REG_SZ

      Value: TRUE

      HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\ICA

      Client\Engine\Configuration\Advanced\Modules\Thinwire3.0

      Name: Tw2IgnoreExecutionErrors

      Type: REG_SZ

      Value: TRUE

    • On 64-bit Windows

      HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Citrix\ICA Client\Engine\Configuration\Advanced\Modules\Thinwire3.0

      Name: Tw2IgnoreValidationErrors

      Type: REG_SZ

      Value: TRUE

      HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Citrix\ICA Client\Engine\Configuration\Advanced\Modules\Thinwire3.0

      Name: Tw2IgnoreExecutionErrors

      Type: REG_SZ

      Value: TRUE [LC7655]

Server/Site Administration

  • When a user password expires, the “Change Password” input form might become non-interactive. The issue occurs when the new password does not meet the requirement. [LC7943]

Session/Connection

  • When you assign a desktop group to an external client IP address according to the procedure described in Knowledge Center article CTX128232, the published desktop might fail to start when you access through NetScaler Gateway. The following error message might appear:

    “Cannot start app” [LC5932]

  • Citrix Receiver for Windows might fail to connect to StoreFront when connected through the Juniper SSL VPN. The issue occurs when the DNS resolution for the StoreFront URL fails. [LC6711]

  • Citrix Receiver for Windows might exit unexpectedly when disconnecting from a VDA that is using an integrated webcam. The issue occurs when you disconnect from the VDA while the webcam is running. [LC6815]

  • With Desktop Lock enabled, the user session might automatically disconnect when the StoreFront session expires. [LC6984]

  • When using the Epic Hyperspace software for medical dictation, the dictation recorder might become unresponsive on the user device while recording. [LC7435]

  • When you use the Citrix ICA Client Object API to launch a client session through NetScaler and configure the Client Selective Trust in Group Policy Object, the session might fail to launch. [LC7575]

  • File type association might fail to open the associated document when you set the registry value “DisableStubCreation” to “true” under the registry key HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\Dazzle on 32-bit Windows and HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Citrix\Dazzle on 64-bit Windows. The issue occurs when the “%1” parameter is missing for the relevant file name extension under the registry key HKEY_CURRENT_USER\SOFTWARE\Classes\Dazzle.<appname>.<extension>.1\shell\open\command. [LC7619]

  • With local app access enabled, the size and position of VDA for Desktop OS sessions launched in full-screen mode might be incorrect. [LC7646]

  • When you add a store through the group policy settings or the command line and configure reconnect at Windows logon, Citrix Receiver for Windows might not automatically reconnect at Windows logon. [LC7679]

  • After resuming from Sleep mode, the auto client reconnect feature might fail to work, preventing sessions from reconnecting. [LC7705]

  • With local app access enabled, the wfcrun32.exe process might exit unexpectedly. [LC7946]

Smart Cards

  • With the local security setting “Lock Workstation,” located under the policy “Interactive logon: Smart card removal behavior” set in a user session, the session might not be locked when you remove the smart card reader from that session. [LC7571]

  • When the SCardListReaderGroup API is called in a user session from the server, Citrix Receiver for Windows might not execute the API that is called on the client side. [LC7699]

User Experience

  • Double-tapping on a device’s touchscreen might not work for some applications within a user session. [LC6698]

  • When you click the taskbar icons to switch the focus between the windows of a third-party application in a seamless session, the corresponding window of the third-party application might fail to appear in the foreground. [LC6709]

  • When you change the resolution of the user device while one of the mouse buttons is in the down state, seamless apps might not be able to receive the mouse up state for that mouse event. As a result, the mouse capture is lost. [LC7419]

  • When you configure shortcut options in the Store web.config file, published application shortcuts might disappear from the Start menu and desktop. [LC7577]

  • When launching a session in seamless mode while using Epic Hyperspace, the application might not allow other applications that are running locally on an endpoint to appear in the foreground. The Epic Hyperspace application might retain the foreground focus until the application is minimized. [LC7906]

Note: This version of Citrix Receiver for Windows also includes all fixes included in Versions 4.8, 4.7, 4.6, 4.5, 4.4, 4.3, 4.2, 4.1, and 4.0.