Fixed issues

Citrix Director

  • When you log on to Citrix Director for the first time after you restart Internet Information Services (IIS), the following error message might appear on the Trends page:

    No details are available.

    [CVADHELP-12426]

  • Attempts to send messages to multiple users might fail with the following error message:

    Message cannot be sent. Unexpected server error. View Director server event logs for further information.

    [CVADHELP-12601]

  • When Citrix Director attempts to set up an email configuration using an SMTP server, this error message might appear:

    Invalid Email Server

    [CVADHELP-14449]

  • When you attempt to configure an email server on a standalone server using Citrix Director, this error message might appear:

    Invalid Email Server.

    The issue occurs when you configure the email server for alerts and notifications. [CVADHELP-14648]

Citrix Policy

  • Servers might disconnect and become unresponsive unless you restart the Group Policy engine (CseEngine.exe) service. [CVADHELP-12987]

Citrix Studio

  • Attempts to launch an App-V application might fail with the following error message:

    Cannot start

    The issue occurs when large App-V packages are not fully streamed to VDAs. [CVADHELP-12889]

  • When you upgrade Citrix Studio from Version 7.6 to Version 7.15, the time it takes to open some wizards (such as Machine Catalog and Delivery Group) might increase. [CVADHELP-13267]

  • When you add App-V packages to Citrix Studio, some packages might show default icons instead of customized icons. [CVADHELP-13338]

  • When you attempt to add devices from PVS collection to a catalog in Citrix Studio, all target devices might be listed including machines that already exist in the catalog. [CVADHELP-13403]

  • When you attempt to change the executable path or the icon location of an existing app assigned to an Application Group, the following error message might appear:

    Unable to browse machines in the Delivery Group. Do you want to browse on the local machine?

    [CVADHELP-14199]

  • When you run Studio as a published app, Studio might become unresponsive. [CVADHELP-14207]

Delivery Controller

  • Attempts to send messages to many users through Citrix Director might fail. This error message appears:

    Message Cannot be sent. Data source unresponsive or reported an error.

    The fix intends to minimize the occurrence of this issue.

    [CVADHELP-12066]

  • When you attempt to view custom reports for application instances from Citrix Director, some fields might display null values instead of application end times. [CVADHELP-12733]

  • Application enumeration might cause a significant increase in CPU usage on the SQL server hosting the site database. [CVADHELP-13043]

  • Attempts to groom resource utilization data from a table in the Monitoring database might fail with an execution timeout. [CVADHELP-13075]

  • With the Remote PC Access Wake on LAN feature enabled in a machine catalog, Local Host Cache might stop synchronizing data. The issue occurs when you use Microsoft System Center Configuration Manager (SCCM) as a hosting connection. [CVADHELP-13122]

  • A virtual machine where a user session is running might shut down unexpectedly. The issue occurs when the Automatic Client Reconnection feature fails to trigger a Delete power action that is pending in the database. [CVADHELP-13165]

  • After daylight saving time ended for the year 2019 and with the restart schedule configured, an unexpected scheduled restart occurred only for the Delivery Group. [CVADHELP-13486]

  • When you add administrators of other domains to Citrix Studio, Studio might display the following error message:

    Error: Failed to validate the Central Configuration Service Location.

    You do not have sufficient permissions to administer the Site using Studio, or there is a problem with the Delegated Administration service.

    The issue occurs if a domain controller in any one of the domains is unreachable. [CVADHELP-13651]

  • When you generate a License Server report using the udadmin command, the report might show that the licenses are issued to the same device multiple times. The issue occurs when different devices with the correct hardware IDs are updated against duplicate names. The issue does not impact the license consumption, but only the report. [CVADHELP-13763]

  • Local Host Cache (LHC) files might disappear after download starts. As a result, the old files remain or LHC files fail to appear in the location C:\Windows\ServiceProfiles\NetworkService. [CVADHELP-13980]

  • Attempts to import synchronized configurations to the Local Host Cache database might repeatedly fail with an Error 505. [CVADHELP-14237]

  • After you upgrade XenApp and XenDesktop 7.15 Cumulative Update 1 to Cumulative Update 3, attempts to import Local Host Cache (LHC) might fail with an Error 505. [CVADHELP-14429]

Federated Authentication Service

  • The GUI does not support multiple certificate authority (CA) servers. [CVADHELP-11919]

Linux Virtual Delivery Agent

Linux Virtual Delivery Agent 7.15 LTSR CU6 documentation provides specific information about the updates in this release.

Profile Management

  • Attempts to create a user profile on Microsoft Windows 10 Version 2004 might fail. [CVADHELP-14235]

  • When you log on to a session using a temporary profile, an empty user profile folder might be created under C:\Users. Profile Management deletes the temporary profile on logoff, leaving behind the empty user profile folder. [CVADHELP-14297]

  • With the AppData(Roaming) folder redirection policy enabled, some tiles might disappear from the Start menu. The issue occurs when you log on to a Windows Server 2016 or 2019 machine running Citrix Virtual Apps and Desktops 1912 or earlier. [CVADHELP-14336]

  • With the Logon Exclusion Check policy enabled, Profile Management might fail to synchronize files under an excluded folder. Instead, Profile Management might delete or ignore the files on logon. The issue occurs with files that match paths containing wildcards in the List of files to synchronize policy. [CVADHELP-14347]

Provisioning Services

Provisioning Services 7.15 LTSR CU6 provides specific information about the updates in this release.

StoreFront

  • When StoreFront Version 3.12 Cumulative Update 3 is configured using SAML authentication and a complex AD architecture containing multiple domains, the Federated Authentication Service (FAS) might fail to launch an application. This error message appears:

    Cannot Start App.

    The issue occurs with FAS enabled on a Store.

    [CVADHELP-12865]

  • If you configure the StoreFront management console with SAML authentication and enter the IdP URL (for PingID) in the address field, those changes might not be saved. This error message appears:

    Error received: An error occurred while saving changes

    [CVADHELP-13373]

  • Security Assertion Markup Language (SAML) authentication might fail when you use a third-party application as an Identity Provider (IdP).

    The following error message appears:

    There was a failure with the mapped account.

    [CVADHELP-13396]

  • When a custom config file is present in the store folder, the custom file might replace the content of the web.config file in the store folder. The issue occurs when you upgrade StoreFront. [CVADHELP-13485]

  • This fix addresses a security vulnerability in an underlying component. [CVADHELP-13602]

  • Upgrades that include 2.6, 3.0.1, 3.5, 3.8 in their upgrade history to 3.12 CU* and above may fail if the Citrix StoreFront Protocol Transition service s in Stopped state. [CVADHELP-13626]

  • When you log on to StoreFront, application enumeration might take a long time to complete. The issue occurs if you type your user name in domain\username format and user authentication is delegated to Delivery Controllers. [CVADHELP-13891]

  • In the StoreFront console, attempts to add domain names that contain an underscore (_) to a trusted domain list might fail. [CVADHELP-14213]

  • When you install a Delivery Controller, StoreFront might not be installed by default. To install it, use the Citrix StoreFront option from the Citrix Virtual Apps and Desktops metainstaller. [LCM-7335]

Universal Print Server

Client

  • Due to an access violation, the Universal Print Server (UPServer.exe) might exit unexpectedly. [CVADHELP-10627]

  • The Print Spooler service (spoolsv.exe) might enter a deadlock. As a result, the documents fail to print and Microsoft Office applications do not launch. [CVADHELP-13315]

  • When you attempt to launch an application, the Citrix Print Manager Service (CpSvc.exe) might exit unexpectedly. [CVADHELP-13945]

  • The Print Spooler service might exit unexpectedly. [CVADHELP-13954]

Server

  • Due to an access violation, the Universal Print Server (UPServer.exe) might exit unexpectedly. [CVADHELP-10627]

  • The Universal Print Server (UPServer.exe) might exit unexpectedly. The issue occurs because of the faulting module, prntvpt.dll. [CVADHELP-12651]

VDA for Desktop OS

Keyboard

  • With the Citrix generic client Input Method Editor (IME) feature enabled, an application might exit unexpectedly when you use the Chinese client IME to input special characters and numbers in the application. The issue occurs in desktop and app sessions running on Microsoft Windows 10 Version 1809 and Windows Server 2019. [CVADHELP-13961]

Installing, Uninstalling, Upgrading

  • When you upgrade a VDA, the MaxVideoMemoryBytes registry key might revert to the default value. [CVADHELP-13629]

  • When upgrading a VDA, you cannot disable the Optimize performance feature on the Features page. Also, you cannot enable other features on that page. [CVADHELP-14560]

Printing

  • After you upgrade a VDA to Version 7.15 Cumulative Update 4, the Citrix Print Manager Service (CpSvc.exe) might exit unexpectedly. [CVADHELP-12888]

  • When you attempt to launch an application, the Citrix Print Manager Service (CpSvc.exe) might exit unexpectedly. [CVADHELP-13945]

Session/Connection

  • When you start a dedicated desktop session, a logon failure might occur and the logoff process might get stuck. Citrix Studio shows the session as connected, but you cannot log off until you manually restart the machine. [CVADHELP-10931]

  • When the Windows Media Player moves from the current track to the next track in the playlist, audio might not play at the beginning of the next track. The issue occurs if Windows Media redirection is enabled. [CVADHELP-11639]

  • When audio devices are added to a user session, you cannot hear sounds from any of the devices except the sounds of Skype for Business. This error message appears:

    Error - no more device slots available - failed to add the device.

    The issue occurs when more than eight playback or record devices are attached to an endpoint. [CVADHELP-12760]

  • Session roaming might not work on a VDA. The issue occurs with Dell Wyse thin client devices. [CVADHELP-13003]

  • When you reconnect to an active session on another machine, redirected printers and client drives might be missing. The issue occurs when you move from one machine to another without locking or disconnecting the active user session. [CVADHELP-13035]

  • If you click the Cancel button when an application is capturing a video using a webcam, the application might become unresponsive. The issue occurs because of the faulting module, MFDeviceSource.dll. [CVADHELP-13062]

  • Reading data from a client drive might take a long time after you change the value of the following registry key to 1 on a VDA:

    To enable it, add the following registry key:

    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\Wds\icawd

    Name: PacketIntegrityChecks

    Type: DWORD

    Value: 1

    [CVADHELP-13063]

  • When a session is recorded on Citrix Workspace app for Windows, movements of a mouse pointer might not be recorded. The issue occurs with VDA Version 7.15.400. [CVADHELP-13300]

  • Attempts to launch a session on a VDA might fail when you use some third-party vulnerability scanners. [CVADHELP-13306]

  • A VDA might become unresponsive after restart. The issue occurs when security software such as Symantec SEP enforces security scans. [CVADHELP-13832]

  • Some portions of an application window might become transparent, causing the application to run in the background instead of in the foreground. The issue occurs in seamless mode. [CVADHELP-13903]

  • In a multi-monitor environment, applications might not display consistently on the same monitor. The issue occurs when you move to a new workstation. [CVADHELP-13657]

Smart cards

  • After you configure smart card authentication on Windows 10, smart card pass-through authentication might fail if you launch a desktop in a user session. The issue occurs when you launch a desktop from a thin client. [CVADHELP-11757]

System Exceptions

  • USB redirection can cause VDAs to experience a fatal exception, displaying a blue screen with bug check code SYSTEM_THREAD_EXCEPTION_NOT_HANDLED (7e). Also, global lock for USB redirection might not be released, thus blocking other redirections. [CVADHELP-9237]

  • VDAs might experience a fatal exception on ctxdvcs.sys and display a blue screen. [CVADHELP-13000]

  • VDAs might experience a fatal exception on ctxdvcs.sys and display a blue screen with bug check code 0xc0000409. [CVADHELP-13102]

  • An application that uses the Electron framework might exit unexpectedly with the following error message:

    {EXCEPTION} Illegal Instruction An attempt was made to execute an illegal instruction.

    [CVADHELP-13440]

User Interface

  • The Devices tab might be missing from the Citrix Workspace – Preferences window (Desktop Viewer toolbar > Preferences). The issue occurs with a VDI desktop that runs on Microsoft Windows Server through a Server VDI switch. [CVADHELP-14158]

VDA for Server OS

Keyboard

  • With the Citrix generic client Input Method Editor (IME) feature enabled, an application might exit unexpectedly when you use the Chinese client IME to input special characters and numbers in the application. The issue occurs in desktop and app sessions running on Microsoft Windows 10 Version 1809 and Windows Server 2019. [CVADHELP-13961]

Printing

  • After you upgrade a VDA to Version 7.15 Cumulative Update 4, the Citrix Print Manager Service (CpSvc.exe) might exit unexpectedly. [CVADHELP-12888]

  • Attempts to print documents to a different output printer tray might fail. The print job uses the default tray to print documents even if you choose a different tray in the Print dialog box. [CVADHELP-13492]

  • When you attempt to launch an application, the Citrix Print Manager Service (CpSvc.exe) might exit unexpectedly. [CVADHELP-13945]

Session/Connection

  • When the Windows Media Player moves from the current track to the next track in the playlist, audio might not play at the beginning of the next track. The issue occurs if Windows Media redirection is enabled. [CVADHELP-11639]

  • When you launch a published application on a VDA for Server OS, the Windows RunOnce registry key might not execute. [CVADHELP-11991]

  • A Delivery Controller might show invalid session information. The issue occurs when session information that a VDA sends to the Delivery Controller contains the IP address 127.0.0.1. [CVADHELP-12767]

  • Attempts to launch an application might fail. As a result, session details under Task Manager cannot be found and the following application status in Citrix Studio appears: application not running. When the issue occurs, the VDA might reregister and the following error message appears:

    Event ID 1048: WCF Failure or Rejection by Broker

    [CVADHELP-12856]

  • When attempting to highlight text in a user session, you might experience performance issues. The issue occurs when you do that in Microsoft Outlook Version 2016 running in a published desktop.

    To enable it, add the following registry key:

    HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\Graphics\

    Name: CursorShapeChangeMinInterval

    Type: DWORD

    Value: Possible values: 10 through 100. Recommended value: 50. The default is 0, which means disabled.

    [CVADHELP-12886]

  • If you click the Cancel button when an application is capturing a video using a webcam, the application might become unresponsive. The issue occurs because of the faulting module, MFDeviceSource.dll. [CVADHELP-13062]

  • Reading data from a client drive might take a long time after you change the value of the following registry key to 1 on a VDA:

    To enable it, add the following registry key:

    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\Wds\icawd

    Name: PacketIntegrityChecks

    Type: DWORD

    Value: 1

    [CVADHELP-13063]

  • When a session is recorded on Citrix Workspace app for Windows, movements of a mouse pointer might not be recorded. The issue occurs with VDA Version 7.15.400. [CVADHELP-13300]

  • Attempts to log off from a user session using Citrix Studio and Citrix Director might fail when a published application is launched in that session. [CVADHELP-13307]

  • In a multi-monitor environment, applications might not display consistently on the same monitor. The issue occurs when you move to a new workstation. [CVADHELP-13657]

  • A VDA might become unresponsive after restart. The issue occurs when security software such as Symantec SEP enforces security scans. [CVADHELP-13832]

  • Some portions of an application window might become transparent, causing the application to run in the background instead of in the foreground. The issue occurs in seamless mode. [CVADHELP-13903]

  • COM port redirection might fail to work after Automatic Client Reconnection (ACR) reconnects to a session following a network disconnection. [CVADHELP-13926]

  • After a VDA reports a full load due to high memory usage, the load index value might remain at 10,000 even if the memory usage drops to a low level. [CVADHELP-14563]

  • When you lock a seamless session, the logon window might cover the entire screen, regardless of the size of the session window. As a result, you cannot access the endpoint’s desktop and other applications. [CVADHELP-14589]

Smart cards

  • Pass-through authentication with smart cards might fail intermittently. The issue occurs when you launch an HDX session on Windows Server 2016. [CVADHELP-13054]

System Exceptions

  • USB redirection can cause VDAs to experience a fatal exception, displaying a blue screen with bug check code SYSTEM_THREAD_EXCEPTION_NOT_HANDLED (7e). Also, global lock for USB redirection might not be released, thus blocking other redirections. [CVADHELP-9237]

  • VDAs might experience a fatal exception on ctxdvcs.sys and display a blue screen. [CVADHELP-13000]

  • VDAs might experience a fatal exception on ctxdvcs.sys and display a blue screen with bug check code 0xc0000409. [CVADHELP-13102]

  • Servers might experience a fatal exception on icardd.dll, displaying a blue screen with bug check code 0x0000003B. [CVADHELP-13330]

  • An application that uses the Electron framework might exit unexpectedly with the following error message:

    {EXCEPTION} Illegal Instruction An attempt was made to execute an illegal instruction.

    [CVADHELP-13440]

  • The Service Host (svchost.exe) process or the wfshell.exe process might experience an access violation and exit unexpectedly. The issue occurs because of the faulting module, icaendpoint.dll. [CVADHELP-14276]

  • VDAs might experience a fatal exception on picadm.sys and display a blue screen with bug check code 0x22. [CVADHELP-14332]

  • On a device that has more than nine monitors, attempts to launch a user session might fail with a fatal exception, displaying a blue screen with bug check code 0x3B. [CVADHELP-14775]

Virtual Desktop Components – Other

  • When you launch an App-V application from a VDA hosting many App-V applications, the VDA might deregister. The issue occurs when the time it takes to process associated policy files is long. [CVADHELP-12592]