Fixed issues

Citrix Director

• Attempts to remove the user assignment from a desktop using Citrix Studio, PowerShell, or Citrix Director by a delegated administrator with a custom role might fail. The issue occurs when custom administrators have permissions to perform the operations on the Delivery Groups but do not have permissions on the Machine Catalogs. [LC8174]

• Attempts to search for users when assigning them to machines might fail. The selected user is shown as null. [LC8395]

• Citrix Director might report Multi-Stream ICA as inactive when using the UDP-based Data Transfer Protocol (UDT). The issue occurs when the HDX WMI provider is not updated to account for EDT or UDT sessions. [LC8960]

• The CPU usage of the w3wp.exe process might be very high on Citrix Director. [LC9222]

• When you set the browser language to certain non-English language and start Citrix Director, the session detail pane might show one session as active even when there are no sessions running. [LC9392]

• When using Citrix Director, Microsoft Internet Explorer 11 might display non-functional scroll bars in the Machine Details section of Filters > Machines > All machines page. [LC9505]

• In the Trends page in Citrix Director, Internet Explorer might automatically add Google Analytics (https://www.google-analytics.com) as a trusted site. This action by Internet Explorer cannot be stopped. Even when you disable the automatic uploads value SendExperienceMetrics under the registry key HKEY_LOCAL_MACHINE\Software\Citrix\MetaInstall, Google Analytics calls are established on the Citrix Director dashboard and on the Applications page. To disable automatic uploads, use the procedure described in Citrix Insight Services. After you apply this fix, a ping is made to Google Analytics on a Citrix Director logon, but the data doesn’t upload. [LC9736]

• The reports generated in CSV format for the logon performance in Citrix Director might use the UTC time zone instead of the local time. [LC9854]

• Some administrators might not be able to access some domains that were added in the web.config domain list. As a result, when you search for a user’s session, an exception occurs and the session details are not displayed. [LC9865]

• The ExportCsvDrilldownLimit value might not be applied for custom reports in Citrix Director. [LD0004]

Citrix Policy

• When you apply the loopback policy in merge mode to a VDA and add the StoreFront URL to a Delivery Group of the VDA in Citrix Studio, duplicate icons of published applications might appear. [LC8889]

• Attempts to create a machine catalog might fail with an exception stating that it cannot create the summary. Additionally, when using the creation catalog wizard and before the exception appears, the drop-down list that is supposed to list the domains is empty. [LC9636]

• When you run the Group Policy Results tool from the Group Policy Management console on a machine that is installed with VDA 7.15.2000, the following error message appears: An error occurred while generating report: Not Found [LC9825]

• The Citrix Print Manager service (cpsvc.exe) might exit unexpectedly. The issue occurs when there are garbage entries in the printing registry key that is connected to a Group Policy Object (GPO). [LC9921]

• The Group Policy engine might fail to insert all the values to the ApplicationStartDetails registry key. As a result, attempts to start App-V applications might fail. [LC9942]

• When registry entries are manually pre-populated to session keys under the registry key HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Citrix, the keys might not be updated upon session start. [LC9977]

• When you attempt to apply a Citrix Policy in Citrix Studio using the Organizational Unit (OU) filter, the following error message might appear: An unknown error occurred.

  The following exception appears: Collection was modified; enumeration operation may not execute.[LD0044]

• When you attempt to back up a Group Policy and then import the Group Policy with the Group Policy Management Console (GPMC) Version 3.1.2, the GPMC might become unresponsive. But, the policy is imported. [LD0173]

Citrix Studio

• Attempts to remove the user assignment from a desktop using Citrix Studio, PowerShell, or Citrix Director by a delegated administrator with a custom role might fail. The issue occurs when custom administrators have permissions to perform the operations on the Delivery Groups but do not have permissions on the Machine Catalogs. [LC8174]

• When one of the Delivery Controllers goes offline or becomes otherwise unavailable, Citrix Studio might take a few minutes to open and display the following message:

  This snap-in is not responding. [LC8993]

• Attempts to unpublish and remove App-V packages from the VDA might fail. [LC9161]

• When you attempt to view the Machine Allocation page for the second time after selecting Edit Delivery Group in the Actions pane, the Machine Allocation page might become blank and the details such as machine name and users are not displayed. [LC9465]

• Attempts to delete the application folder in Citrix Studio after moving the published application from Application Group might fail with a permission error. [LC9520]

• After upgrading Citrix Studio to Version 7.15 Cumulative Update 2, the policies might not be localized. For more information, see Knowledge Center article CTX234711. [LC9613]

• Attempts to create a machine catalog might fail with an exception stating that it cannot create the summary. Additionally, when using the creation catalog wizard and before the exception appears, the drop-down list that is supposed to list the domains is empty. [LC9636]

• When you attempt to delete App-V applications from the Delivery Group, the applications might be deleted. An error message appears. [LC9985]

• When you attempt to apply a Citrix Policy in Citrix Studio using the Organizational Unit (OU) filter, the following error message might appear: An unknown error occurred.

  The following exception appears: Collection was modified; enumeration operation may not execute. [LD0044]

• When you attempt to apply a Citrix policy in Citrix Studio using the Organizational Unit (OU) filter or add an OU in the catalog wizard, an exception occurs. [LD0112]

Controller

• Attempts to remove the user assignment from a desktop using Citrix Studio, PowerShell, or Citrix Director by a delegated administrator with a custom role might fail. The issue occurs when custom administrators have permissions to perform the operations on the Delivery Groups but do not have permissions on the Machine Catalogs. [LC8174]

• The VDAs might intermittently have an invalid power state in Citrix Studio. Studio shows the power state to be OFF even when the VDA is running. [LC8898]

• When one of the Delivery Controllers goes offline or becomes otherwise unavailable, Citrix Studio might take a few minutes to open and display the following message:

  This snap-in is not responding [LC8993]

• You import changes from the principal broker to the Local Host Cache (LHC) database and remove a user or machine from the Active Directory without removing it from Citrix Studio. As a result, errors might occur and the LHC isn’t updated. [LC9054]

• Deadlocks might occur on XenApp with an application Event ID 2013 during peak connection time. This error message appears:

  An unexpected exception occurred while the Citrix Broker Service processed an HTTP request. [LC9134]

• When you upgrade XenApp 7.6 to XenApp 7.15, the permissions for the Licensing folder on the Delivery Controller under C:\Windows\ServiceProfiles\NetworkService\Licensing is overwritten. [LC9445]

• The Citrix High Availability Service (HighAvailabilityService.exe) memory usage might exceed 2 GB. [LC9446]

• When you send a reboot command to the target VDA from Citrix Studio, the target VDA might shut down. [LC9479]

• Attempts to delete the application folder in Citrix Studio after moving the published application from Application Group might fail with a permission error. [LC9520]

• The Virtual desktop infrastructure (VDI) that is hosted on the ESXi hosts might go into an unknown power state and does not power on automatically. The issue occurs after the virtual machines (VMs) are moved to the ESXi hosts after the ESXi hosts are taken out of maintenance mode. [LC9619]

• Attempts to create a machine catalog might fail with an exception stating that it cannot create the summary. Additionally, when using the creation catalog wizard and before the exception appears, the drop-down list that is supposed to list the domains is empty. [LC9636]

• Citrix Studio does not show the Start option. As a result, the Remote PC fails to power on. [LC9702]

• Using this performance enhancement for the Monitor service, reduces the high CPU consumption on the SQL server when the Monitor database is large. [LC9726]

• The Machine Creation Services (MCS) provisioned virtual machines (VMs) might not be created with Secure Boot enabled. This issue might occur even when the Master template was created using Extensible Firmware Interface (EFI) and with Secure Boot enabled. [LC9841]

• By default, the Amazon Web Services (AWS) ID of the Machine Creation Services (MCS) provisioned machine is non-persistent. This might cause the power management actions of the virtual machine to fail on the AWS.

  To configure the persistence of the AWS ID, the following options are available:

  • To enable the persistent of the AWS ID, set the Host connection’s advance property’s Connection option to CreateNewInstanceOnReset=False.
  • To disable the persistent of the AWS ID, set the Host connection’s advance property’s Connection option to CreateNewInstanceOnReset=True or delete the option.

  A ten second wait time is required when the option is changed to take effect. [LC9960]

• Attempts to create an application using the New-BrokerApplication command with the -AdminFolder parameter might not create the specified folder in certain scenarios. [LC9982]

• When you attempt to delete App-V applications from the Delivery Group, the applications might be deleted. An error message appears. [LC9985]

• In a large environment where many Application Groups are used, when you click the Applications tab in Studio, the session times out while fetching Get-BrokerApplicationGroup output. As a result, the following exception appears:

  Database could not be connected.

  Before throwing the exception, Studio becomes unresponsive while enumerating the Application Groups. [LD0012]

• When you attempt to apply a Citrix Policy in Citrix Studio using the Organizational Unit (OU) filter, the following error message might appear: An unknown error occurred.

  The following exception appears: Collection was modified; enumeration operation may not execute. [LD0044]

• Attempts to recreate the Local Host Cache with a Delivery Group name that contains special characters might fail with an Event ID 505. [LD0068]

• The Citrix Studio hosting connection might give a warning message to use the HTTPS for XenServer hosting connections even though the HTTPS connections are not supported. [LD0210]

• After you upgrade XenApp and XenDesktop to Version 7.15, the initial reboot schedules might start immediately instead of starting during the next scheduled event. [LD0308]

HDX RealTime Optimization Pack

HDX RealTime Optimization Pack 7.15 LTSR CU3 documentation provides specific information about the updates in this release.

Identity Assertion

• Attempts to access the authentication certificate that is available in the session to log on might fail. [LC9728]

• When using a Federated Authentication Service in-session certificate to authenticate a TLS 1.1 (or earlier) connection, the connection can fail. Event ID 305 is logged, indicating an unsupported hash ID. The Federated Authentication Service does not support the SHAMD5 hash. [LD0018]

Installer

• Attempts to install the VDA in the environment that already has Adobe Acrobat Reader 2015 DC application installed can result in the following error message:

  The Program can’t start because mfc120u.dll is missing from your computer. Try reinstalling the program to fix the problem. [LC9979]

Linux VDA

Linux Virtual Delivery Agent 7.15 LTSR CU3 documentation provides specific information about the updates in this release.

Profile Management

• When you configure folder redirection using Microsoft Active Directory policy by clicking Reset Profile in Citrix Director, the redirected folders are also reset. As a result, certain folders such as Documents, Pictures, Music, Videos, and Favorites are renamed. But, folders such as Start Menu, Contacts, Downloads, Links, Searches, and Saved Games are not renamed. [LC9237]

• The Profile Management Service might exit unexpectedly with exception code 0xc0000374. [LC9355]

• Profile Management might not synchronize certain settings on the VDA that is running on Microsoft Windows 10, version 1709. [LC9503]

• When the Active Write back registry policy is enabled, the default policy of the registry exclusion including Software\Microsoft\AppV\Client\Integration and Software\Microsoft\AppV\Client\Publishing might not work. [LC9550]

• You have full permission to the default user profile. During the first logon, Profile Management might delete the excluded folders that are configured through a policy from the default user profile. The issue occurs when the logon exclusion check is configured to delete the excluded files and folders. [LC9575]

• Profile Management configured with Active write back Registry processes all the registries and records all the changes into a temporary file regardless of whether the registries are being excluded or included. As a result, there is a high CPU usage. [LC9624]

• 7.15 LTSR CU2 sessions might launch as a black screen. The issue occurs with sessions running on XenApp and XenDesktop 7.15 LTSR CU2 and 7.17 VDAs when Profile Management is enabled. For more information and a workaround, see Knowledge Center article CTX235100. [LC9648]

• The Folder to Mirror policy in Profile Management might fail to work. [LC9691]

• With Profile Management enabled, blank icons might appear in the Start menu in the published desktops. The issue occurs during second or subsequent logons.

  Note: This fix is effective only on fresh installations. For upgrade scenarios, you must configure the Folder to Mirror policy manually either in the HDX Group Policy Editor or in the Active Directory Policy Editor. [LC9692]

• The AppData(Roaming) folder redirection might fail to work on Profile Management and this error message appears:

  Access is Denied.

  The issue occurs when the Profile Management does not link AppData/Roaming correctly to the shared folder and attempts to append /Application Data/Roaming erroneously. [LC9830]

Provisioning Services

Provisioning Services 7.15 LTSR CU3 provides specific information about the updates in this release.

Remote Broker Provider

• By default, the Amazon Web Services (AWS) ID of the Machine Creation Services (MCS) provisioned machine is non-persistent. This might cause the power management actions of the virtual machine to fail on the AWS.

  To configure the persistence of the AWS ID, the following options are available:

  • To enable the persistent of the AWS ID, set the Host connection’s advance property’s Connection option to CreateNewInstanceOnReset=False.
  • To disable the persistent of the AWS ID, set the Host connection’s advance property’s Connection option to CreateNewInstanceOnReset=True or delete the option.

  A ten second wait time is required when the option is changed to take effect. [LC9960]

Session Recording

Administration

• A user from domain B logs on to the Session Recording server on domain A and attempts to update the Session Recording property. The machine GUID is not produced and an error occurs. The issue occurs because the user is in domain B, but the Session Recording server is in domain A. [LC9562]

Agent

• The published instance of Microsoft Internet Explorer might be shown as explorer.exe on the Session Recording player list. The correct file name is Iexplore.exe. [LC9622]

StoreFront

• When you zoom the browser to 125%, the custom logo might disappear. [LC9018]

• With OverrideIcaClientname enabled, attempts to establish a remote session from the Remote Desktop client might fail. The issue occurs when the license is not renewed. One of these error messages might appear:

  “The remote session could not be established from remote desktop client WR_XxXXxXXX because its license could not be renewed.”

  OR

  “The remote session could not be established from remote desktop client WR_XxXXxXXX because its temporary license has expired.” [LC9246]

• Attempts to enumerate applications might fail after updating the Delivery Controller certificate to TLS v1.2. [LC9337]

• When you select a configured Site during the setup of XenDesktop, a default store might be created in StoreFront that uses the default Authentication Service. If you remove this store, users of Citrix Receiver for Windows cannot add any other store and this error message appears:

  “A protocol error occurred while communicating with the Authentication Service.” [LC9404]

• Attempts to log on to StoreFront might fail with the error Cannot Complete your Request. The issue occurs when the published applications have custom icons with minimum resolutions. [LC9521]

• When you use the StoreFront SDK to customize certain features and configure aggregation of the store, the logon might fail with the error Cannot Complete your Request. [LC9561]

• The session prelaunch might not work after you configure Resource Filtering by Keywords. [LC9642]

• The ICA file might show VDA fully qualified domain name (FQDN) in the UDPICAPort entry even when using the NetScaler Gateway connection. [LC9760]

Universal Print Server

Client

• The Universal Print Server might cause the Print Spooler service to become unresponsive. [LC9341]

User Profile Management VDA

• After upgrading the VDA from Version 7.13 to Version 7.15.2000, Citrix Director might not show the redirected folders. The issue occurs when the folder redirection is still working. [LC9968]

• The CPU usage of the brokeragent.exe process might be high. [LD0310]

VDA for Desktop OS

HDX

• The Citrix HDX HTML5 Video Redirection Service (WebSocketService.exe) might exit unexpectedly and the video is not redirected on the HTML5 page. [LC8825]

• When a published application that is running on a VDA is using a generic path such as %ProgramFiles% or %ProgramFiles(x86)%, a new duplicated application window might open while reconnecting the session. [LC9741]

Printing

• An access violation in CpSvc!CDispatcher::UpdateCounters can cause the Citrix Print Manager service (cpsvc.exe) to exit unexpectedly. [LC8804]

• The default printer might not be set for non .net applications. Microsoft Windows Server 2016 fails to update the value under the registry key HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows\Device when the default printer is the Citrix mapped printer. [LC8984]

• The default printer might be incorrectly set in a session. The issue occurs when the default printer switches to any other random printer. [LC8999]

• When reconnecting to a session, the printers that are mapped into a session might load slowly while using legacy printer names. [LC9079]

• In certain Microsoft Excel files, when you navigate to Excel > Print, and then select any auto-create client printer using the Citrix Universal Printer EMF driver, the characters in the print preview image might appear smaller. [LC9700]

• The Citrix Print Manager service (cpsvc.exe) might exit unexpectedly. The issue occurs when CpWSGetPrinterConnectionsFromPolicy passes a null pointer to the comparison string [MS] _wcsicmp. [LC9796]

Session/Connection

• The web camera might become unresponsive inside a user session. The issue occurs when you perform any of these actions:

  • When using certain third-party applications to select a webcam in a user session, the webcam video frames become unresponsive.
  • When using the GraphEdit tool to start a virtual webcam and selecting the Use clock option in the menu.
  • When analyzing the Citrix Diagnostics Facility (CDF) traces, you see that only one video sample is delivered when the delivery pipeline between the VDA and Citrix Receiver for Windows is established. [LC8382]

• Disabling Citrix Hooks might fail to take effect when several executables are added to ExcludedImageNames under the registry key HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\CtxHook. [LC8614]

• Citrix Director might report Multi-Stream ICA as inactive when using the UDP-based Data Transfer Protocol (UDT). The issue occurs when the HDX WMI provider is not updated to account for EDT or UDT sessions. [LC8960]

• Inconsistent mouse movement might occur in a multi-monitor environment using H configuration. You start a Microsoft Skype for Business session and start sharing the screen with the other user. The Citrix graphic driver receives an incorrect mouse location from the operating system.

  To enable the fix, set the following registry key:

  HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\ICA

  Name: DisableAppendMouse

  Type: DWORD

  Data: 00000001

  However, when you use the HDX session after setting the registry key, certain features that programmatically set the mouse pointer location might not work as expected. The features are:

  • Mouse Snap To feature.
  • The capability to synchronize mouse location between users with GotoMeeting screen sharing.
  • The capability to synchronize mouse location between users with Skype for Business screen sharing. [LC8976]

• In certain scenarios, VDAs might reregister automatically with Event ID 1048. For example, when you start two applications with similar names – Lotus Notes and Lotus Notes Standard and close the second application that you have started, it removes the entry of the first application from the registry. When this information is sent to the Delivery Controller through a notification, then that notification is rejected and results in reregistration. [LC9223]

• The HDX RealTime Connector might exit unexpectedly. The video preview window closes or the video preview window shows a black box for a brief time and then closes. The issue occurs when there is no HDX RealTime Media Engine installed on the endpoint. [LC9282]

• The Citrix Audio Service might exit unexpectedly and then restart again. When you reconnect to the same session from the second end point (thin client), the new devices are not mapped correctly to the session. [LC9381]

• If you select the Clear or Delete clipboard function in a published application that is running on a VDA, the VDA clipboard clears but the text remains on the endpoint clipboard. [LC9434]

• When you disconnect a user session from the first end point and then reconnect to the same session from the second end point (thin client), the client side audio devices might be listed in an incorrect order within the VDA.

  To enable the fix, set the following registry key:

  HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\Audio

  Name: CleanMappingWhenDisconnect

  Type: DWORD

  Value: 1 [LC9440]

• The published application sessions might disconnect and user sessions might not log off correctly from the VDAs. When the issue occurs, you might not be able to reconnect and cannot disconnect from Citrix Studio. To remedy this situation, set the sessions to Hidden using the PowerShell command or restart the VDA. [LC9444]

• When using a VDA version 7.15.1000, an abnormal number of CPU instructions that originate from twi3.dll might pass through the Winlogon.exe process. [LC9450]

• With the Client drive redirection policy disabled, when you start an application for the second time from the user device, the application might take a long time to start. [LC9477]

• When you attempt to reconnect to an existing session that is active from a different endpoint, this error message appears:

  Connection interrupted; receiver will attempt to reconnect for 5 minutes.

  The issue occurs on Microsoft Windows 7 that has VDA 7.15 installed. [LC9485]

• A web based application is opened using Microsoft Internet Explorer or Mozilla Firefox browser. When you open certain tabs in the application, the entire desktop might become unresponsive. [LC9508]

• The Server Total instance performance counter might be missing from the ICA Session counters. [LC9537]

• File type association with Local App Access enabled might not work when the files are on the distributed file system (DFS) drive. [LC9538]

• The Event ID 31 Start Listening for Connections might not be passed to the Event Viewer. [LC9556]

• With Unicode keyboard layout mapping enabled, the published applications cannot be logged off. [LC9590]

• When you switch between the keyboard layouts, a pop-up window might appear. Set the following registry key to suppress the pop-up window:

  HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\IcaIme

  Name: HideNotificationWindow

  Type: DWORD

  Value: 1 [LC9592]

• A published application might close intermittently immediately after you start the application due to an unexpected failure. The issue occurs when the information about active processes is retrieved. [LC9661]

• After upgrading XenApp and XenDesktop from version 7.6 to version 7.15 LTSR Cumulative Update 1, certain services might stop or exit unexpectedly, or become unresponsive intermittently during logon. [LC9679]

• The VDAs might become unresponsive after installing XenApp and XenDesktop 7.15 LTSR Cumulative Update 2. [LC9701]

• After you disable certain ciphers through the Microsoft registry HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Ciphers, the TLS might not be enabled. [LC9743]

• When you access a Windows workstation through a Remote PC Access and disconnect from the Remote PC Access session, the workstation might not be locked. Therefore, the workstation is accessible to anyone who can physically reach the workstation. [LC9812]

• The Kana language input key on the Japanese Input Method Editor (IME) might be automatically enabled when you log on to a VDA. [LC9932]

• With this fix, the whitelist process mechanism is added to SCardHook. When the whitelist is defined in the registry, only processes that are included in the whitelist can use smart card redirection.

  HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\SmartCard

  Name: HookProcessWhitelist

  Type: REG_SZ

  Value: <process name> [LC9961]

• When you disconnect a user session from the first endpoint and then reconnect to the same session from a thin client, the client side audio devices might be listed in an incorrect order within the VDA.

  To enable the fix, set the following registry key:

  HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\Audio

  Name: CleanMappingWhenDisconnect

  Type: DWORD

  Value: 1 [LD0458]

System Exceptions

• Servers might experience a fatal exception on picadm.sys and display a blue screen with bug check code 0x22 (FILE_SYSTEM). [LC7726]

• With Enlightened Data Transport (EDT) enabled, servers might experience a fatal exception on tdica.sys and display a blue screen with bug check code SYSTEM_THREAD_EXCEPTION_NOT_HANDLED (7e). [LC8794]

• Servers might experience a fatal exception on picadm.sys and display a blue screen with bug check code 0x000000D1(DRIVER_IRQL_NOT_LESS_OR_EQUAL). [LC8830]

• VDAs might experience a fatal exception on wdica.sys and display a blue screen. [LC9695]

• The wfshell.exe process might exit unexpectedly when attempting to start a published application. The issue occurs when the bidirectional content redirection policy is enabled, while no URLs are provided. [LC9705]

• Microsoft Windows Server 2008 R2 might experience a fatal exception and display a blue screen with bug check code SYSTEM_THREAD_EXCEPTION_NOT_HANDLED (0x1000007E). The issue occurs when XenApp and XenDesktop 7.15 LTSR CU2 is installed on the Microsoft Windows Server. [LC9849]

• Servers might experience a fatal exception on picavc.sys and display a blue screen with bug check code SYSTEM_THREAD_EXCEPTION_NOT_HANDLED (7e). [LD0006]

User Experience

• When you resize and attempt to move the published application from one monitor to another, a white border might appear around the application. [LC9570]

• Configure a VDA to use the Unicode keyboard layout mapping and establish an HDX session from Citrix Receiver with local IME enabled. When you type any character and then select some or all the output characters in a published application, the new characters are inserted before the selected characters instead of replacing them. [LC9591]

• When you change the resolution of the screen and reconnect to the published application from a VDA for Desktop OS, the application window might be truncated. [LC9947]

• In a multi-monitor environment, in certain scenarios the screen does not lock as expected. [LD0186]

User Interface

• When an application window in a seamless session becomes unresponsive, the taskbar icon of the application window might be removed and recreated. [LC9807]

VDA for Server OS

HDX

• The Citrix HDX HTML5 Video Redirection Service (WebSocketService.exe) might exit unexpectedly and the video is not redirected on the HTML5 page. [LC8825]

• When a published application that is running on a VDA is using a generic path such as %ProgramFiles% or %ProgramFiles(x86)%, a new duplicated application window might open while reconnecting the session. [LC9741]

Printing

• An access violation in CpSvc!CDispatcher::UpdateCounters can cause the Citrix Print Manager service (cpsvc.exe) to exit unexpectedly. [LC8804]

• The default printer might not be set for non .net applications. Microsoft Windows Server 2016 fails to update the value under the registry key HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows\Device when the default printer is the Citrix mapped printer. [LC8984]

• The default printer might be incorrectly set in a session. The issue occurs when the default printer switches to any other random printer. [LC8999]

• When reconnecting to a session, the printers that are mapped into a session might load slowly while using legacy printer names. [LC9079]

• In certain Microsoft Excel files, when you navigate to Excel > Print, and then select any auto-create client printer using the Citrix Universal Printer EMF driver, the characters in the print preview image might appear smaller. [LC9700]

• The Citrix Print Manager service (cpsvc.exe) might exit unexpectedly. The issue occurs when CpWSGetPrinterConnectionsFromPolicy passes a null pointer to the comparison string [MS] _wcsicmp. [LC9796]

Session/Connection

• After upgrading the VDA from Version 7.12 to Version 7.13, the badge readers might stop working. [LC7667]

• The web camera might become unresponsive inside a user session. The issue occurs when you perform any of these actions:

  • When using certain third-party applications to select a webcam in a user session, the webcam video frames become unresponsive.
  • When using the GraphEdit tool to start a virtual webcam and selecting the Use clock option in the menu.
  • When analyzing the Citrix Diagnostics Facility (CDF) traces, you see that only one video sample is delivered when the delivery pipeline between the VDA and Citrix Receiver for Windows is established. [LC8382]

• Disabling Citrix Hooks might fail to take effect when several executables are added to ExcludedImageNames under the registry key HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\CtxHook. [LC8614]

• A spurious XenApp session might be created on a VDA for Server OS when a Remote Desktop session disconnects and reconnects. [LC8706]

• Inconsistent mouse movement might occur in a multi-monitor environment using H configuration. You start a Microsoft Skype for Business session and start sharing the screen with the other user. The Citrix graphic driver receives an incorrect mouse location from the operating system.

  To enable the fix, set the following registry key:

  HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\ICA

  Name: DisableAppendMouse

  Type: DWORD

  Value: 00000001

  However, when you use the HDX session after setting the registry key, certain features that programmatically set the mouse pointer location might not work as expected. The features are:

  • Mouse Snap To feature.
  • The capability to synchronize mouse location between users with GotoMeeting screen sharing.
  • The capability to synchronize mouse location between users with Skype for Business screen sharing. [LC8976]

• In certain scenarios, VDAs might reregister automatically with Event ID 1048. For example, when you start two applications with similar names – Lotus Notes and Lotus Notes Standard and close the second application that you have started, it removes the entry of the first application from the registry. When this information is sent to the Delivery Controller through a notification, then that notification is rejected and results in reregistration. [LC9223]

• The HDX RealTime Connector might exit unexpectedly. The video preview window closes or the video preview window shows a black box for a brief time and then closes. The issue occurs when there is no HDX RealTime Media Engine installed on the endpoint. [LC9282]

• You start Microsoft Excel 2007 in a published desktop, open a macro enabled .xslm file, and resize the file in windowed mode on the Desktop Viewer. The session might become unresponsive. The issue occurs when using the keyboard shortcut Alt+Enter. [LC9379]

• The Citrix Audio Service might exit unexpectedly and then restart again. When you reconnect to the same session from the second end point (thin client), the new devices are not mapped correctly to the session. [LC9381]

• If you select the Clear or Delete clipboard function in a published application that is running on a VDA, the VDA clipboard clears but the text remains on the endpoint clipboard. [LC9434]

• The published application sessions might disconnect and user sessions might not log off correctly from the VDAs. When the issue occurs, you might not be able to reconnect and cannot disconnect from Citrix Studio. To remedy this situation, set the sessions to Hidden using the PowerShell command or restart the VDA. [LC9444]

• When using a VDA version 7.15.1000, an abnormal number of CPU instructions that originate from twi3.dll might pass through the Winlogon.exe process. [LC9450]

• With the Client drive redirection policy disabled, when you start an application for the second time from the user device, the application might take a long time to start. [LC9477]

• A web based application is opened using Microsoft Internet Explorer or Mozilla Firefox browser. When you open certain tabs in the application, the entire desktop might become unresponsive. [LC9508]

• The Server Total instance performance counter might be missing from the ICA Session counters. [LC9537]

• File type association with Local App Access enabled might not work when the files are on the distributed file system (DFS) drive. [LC9538]

• With Unicode keyboard layout mapping enabled, the published applications cannot be logged off. [LC9590]

• When you switch between the keyboard layouts, a pop-up window might appear. Set the following registry key to suppress the pop-up window:

  HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\IcaIme

  Name: HideNotificationWindow

  Type: DWORD

  Value: 1 [LC9592]

• A published application might close intermittently immediately after you start the application due to an unexpected failure. The issue occurs when the information about active processes is retrieved. [LC9661]

• In multiple domains or multi-forest environments, you might not be able to start the second application when the local groups are configured for limited visibility. [LC9665]

• After upgrading XenApp and XenDesktop from version 7.6 to version 7.15 LTSR Cumulative Update 1, certain services might stop or exit unexpectedly, or become unresponsive intermittently during logon. [LC9679]

• The VDAs might become unresponsive after installing XenApp and XenDesktop 7.15 LTSR Cumulative Update 2. [LC9701]

• After you disable certain ciphers through the Microsoft registry HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL\Ciphers, the TLS might not be enabled. [LC9743]

• You plug in a USB storage device during session logon and redirect with generic mode. The drive might still exist after you unplug the USB device. [LC9783]

• The Kana language input key on the Japanese Input Method Editor (IME) might be automatically enabled when you log on to a VDA. [LC9932]

• With this fix, the whitelist process mechanism is added to SCardHook. When the whitelist is defined in the registry, only processes that are included in the whitelist can use smart card redirection.

  HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\SmartCard

  Name: HideNotificationWindow

  Type: REG_SZ

  Value: <process name> [LC9961]

• The wfshell.exe process might exit unexpectedly. As a result, the published applications fail to start. [LD0102]

• After you upgrade the VDA to Version 7.15 Cumulative Update 2 or upgrade from Version 7.15 Cumulative Update 1 to Cumulative Update 2, the configured values AnonymousUserIdleTime and MaxAnonymousUsers under the registry key HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Citrix might be removed. [LD0378]

Smart Cards

• You set the registry value DisableLogonUISuppression to 0 under the registry key HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\Citrix Virtual Desktop Agent. When you start a published application, the VDA might require you to type the smart card pin. The message Please wait for the local session manager appears in Citrix Receiver for Windows and eventually times out because the DisableLogonUISuppression value 0 suppresses the LogonUI PIN prompt. As a result, the PIN prompt never appears.

  To enable the fix, set the following registry key:

  HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\Citrix Virtual Desktop Agent

  Name: DisableLogonUISuppressionForSmartCardPublishedApps

  Type: DWORD

  Value: 1 [LC9059]

System Exceptions

• Servers might experience a fatal exception on picadm.sys and display a blue screen with bug check code 0x22 (FILE_SYSTEM). [LC7726]

• With Enlightened Data Transport (EDT) enabled, servers might experience a fatal exception on tdica.sys and display a blue screen with bug check code SYSTEM_THREAD_EXCEPTION_NOT_HANDLED (7e). [LC8794]

• Servers might experience a fatal exception on picadm.sys and display a blue screen with bug check code 0x000000D1(DRIVER_IRQL_NOT_LESS_OR_EQUAL). [LC8830]

• VDAs might experience a fatal exception on wdica.sys and display a blue screen. [LC9695]

• The wfshell.exe process might exit unexpectedly when attempting to start a published application. The issue occurs when the bidirectional content redirection policy is enabled, while no URLs are provided. [LC9705]

• When you start an application, the wfshell.exe process might exit unexpectedly. The issue occurs because of the faulting module, icaendpoint.dll. [LC9737]

• Microsoft Windows Server 2008 R2 might experience a fatal exception and display a blue screen with bug check code SYSTEM_THREAD_EXCEPTION_NOT_HANDLED (0x1000007E). The issue occurs when XenApp and XenDesktop 7.15 LTSR CU2 is installed on the Microsoft Windows Server. [LC9849]

• Servers might experience a fatal exception on picavc.sys and display a blue screen with bug check code SYSTEM_THREAD_EXCEPTION_NOT_HANDLED (7e). [LD0006]

User Experience

• When you attempt to open a hyperlink from certain third-party applications (such as Aurion) that are running on a VDA for Server OS, an extra string %1 might be added at the beginning of the URL. [LC8952]

• When you resize and attempt to move the published application from one monitor to another, a white border might appear around the application. [LC9570]

• Configure a VDA to use the Unicode keyboard layout mapping and establish an HDX session from Citrix Receiver with local IME enabled. When you type any character and then select some or all the output characters in a published application, the new characters are inserted before the selected characters instead of replacing them. [LC9591]

User Interface

• A legal notice appears at the start of the logon screen in a user session. With Local App Access enabled, when you click Ok on the logon screen to continue, the screen might show the legal notice for several seconds before proceeding with the logon. [LC9408]

• When an application window in a seamless session becomes unresponsive, the taskbar icon of the application window might be removed and recreated. [LC9807]

• When you attempt to start a published application, the Citrix Receiver for Windows screen might appear in the bottom right corner. [LC9817]

Virtual Desktop Components - Other

• Attempts to unpublish and remove App-V packages from the VDA might fail. [LC9161]

• The cache overflow in Machine Creation Services Storage Optimization (MCSIO) can result in poor performance of XenServer virtual machines. [LC9351]

• The WMI queries that are running on the VDA might become unresponsive for an indefinite amount of time. [LC9510]

• Attempts to run multiple instances of the same App-V application in the same session might fail. The issue occurs when the process that is running is different than the defined process in the manifest file. [LC9652]

• When the Microsoft Edge browser is running on the VDA, multiple application entries might be seen under the Activity Manager in Citrix Director while you search for the user. [LC9673]