Issues fixed since XenApp and XenDesktop 7.6

Aug 19, 2016

XenApp/XenDesktop 7.6 LTSR Cumulative Update 1 addresses the following issues reported since the release of XenApp and XenDesktop 7.6.

For a list of all issues fixed since the release of 7.6 LTSR, see Issues fixed since 7.6 LTSR.

Citrix Director

  • User name searches in Director can experience random delays of up to two minutes.

    [#LC1250]

  • When attempting to export a large amount of data in PDF format, the server’s CPU and memory consumptions can approach 100% and the following error message appears:

    “Action failed. Data source unresponsive or reported an error. View server event logs for further information.”

    This fix introduces a configurable limit for the PDF export and as a result, at least a portion of the report can be obtained.

    After installing this fix, you must configure the web.config file in the wwwroot\Director folder as follows:

    Add the following line to “appSettings” section:

    <add key=”UI.ExportPdfDrilldownLimit” value=”100”/>

    The limit depends on the capability of the server, such as the memory size where the value specifies the count of rows in the PDF report.

    [#LC4108]

  • Attempts to export reports in any file format might fail with the following error message:

    “Action failed. Unexpected server error. View server event logs for further information.”

    [#LC4281]

  • If a XenApp server has two IP addresses and the DNS server cannot resolve the first IP address, attempts to log on to Citrix Director by an administrator might fail with the following error message:

    “The system is currently unavailable. Please try again later or contact your administrator.”

    [#LC4411]

  • When attempting to export a large amount of data in CSV format, a timeout can occur and the export might fail with the following error message:

    “Action failed. Data source unresponsive or reported an error. View Director server event logs for further information.”

    This fix lets you configure the timeout value for exporting data.

    After installing the fix, you must configure the web.config file in the wwwroot\Director folder as follows:

    Add the following line to “appSettings” section: < add key=”Connector.DataServiceContext.Timeout” value=”3600” /> where the value specifies the timeout in seconds.

    [#LC4467]

  • Selecting a user to display that user’s session details can result in the user name that appears in the top left corner to show as “NULL.”

    [#LC4589]

  • If the NetBios domain name contains an ampersand (&), shadowing from the Citrix Director console might fail. This issue occurs because the ampersand character is a reserved character in XML and can cause the parsing for the current logon to fail.

    [#LC4633]

Citrix Policy

  • The Microsoft Management Console (MMC) fails if the “Console Root” is not selected in the navigation pane when closing Desktop Studio.

    [#LC1314]

  • The Citrix Policy Engine might cause the server to become unresponsive. When this occurs, Citrix Receiver and RDP connection requests fail.

    [#LC1817]

  • With this enhancement, modeling reports created by the Citrix Group Policy Modeling wizard appear in Citrix Studio’s middle pane.

    [#LC2189]

  • When adding or creating a Citrix Administrator in Citrix Studio with a user or group that contains an underscore in the name, such as get\dl_lab_group, the first underscore does not appear in the details of the list of administrators. The name appears as dllab_group.

    [#LC2284]

  • When running the Group Policy Modeling wizard on the policies node of AppCenter as a domain user, applied user and computer policies might not be visible.

    [#LC3284]

  • Citrix Director administrators might not be able to view Citrix policies in session details.

    [#LC3941]

  • Attempts to add multiple session printers to a group of user devices under the “Printer assignments” window fails to expand and display the scrollbar. As a result, attempts to add multiple session printers to a group of user devices can fail.

    [#LC4658]

Citrix Studio

  • When you click the machine catalog in Desktop Studio, it might take a long time for the catalogs to appear. In addition, the hosting information also takes a long time to appear.

    [#LC0237]

  • This fix addresses a security vulnerability. For more information, see Knowledge Center article CTX213045.

    Note: To enable this fix, you must update both Citrix Studio and the Controller components with 7.6 LTSR Cumulative Update 1.

    [#LC0559]

  • Citrix Studio might not recognize Citrix Service Provider licenses and the following error message appears:

    “Can’t find a valid license”

    [#LC0813]

  • With this enhancement, Citrix Studio shows the correct user assignment data when adding users from multiple sites in an Active Directory (AD) domain.

    [#LC0889]

  • This fix addresses an issue that prevents members from being added to a Delivery Group if they belong to a domain other than the one where Citrix Studio is located.

    [#LC0955]

  • The Microsoft Management Console (MMC) fails if the “Console Root” is not selected in the navigation pane when closing Desktop Studio.

    [#LC1314]

  • If the property of an application changes in the “Applications” window, the priority of the Delivery groups might change to zero.

    [#LC1489]

  • After changing the Web Interface port number, Desktop Studio might incorrectly open the License upgrade prompt.

    [#LC1575]

  • Attempts to configure a new site by using the XenDesktop High Level Powershell SDK command “New-XDSite” without configuring licensing and then following attempts to run the command “Get-XDSite” fail. The error message “The site has upgrade steps remaining. Run Get-XDUpgradeStatus to find out the remaining steps” appears.

    [#LC1612]

  • Applications that use App-V integration might not use the correct working directory.

    [#LC1623]

  • If the user configures the prelaunch and lingering sessions in Citrix Studio, the “MaxTimeBeforeDisconnect” property is set to zero minutes instead of the default value 15 minutes.

    [#LC1706]

  • Attempts to start App-V applications through Citrix Receiver may fail after upgrading to App-V 5.0 Service Pack 3.

    [#LC1762]

  • After upgrading to XenDesktop 7.6, Desktop Studio might take about three or four minutes to show the catalogs or Hosting information.

    [#LC1851]

  • When a Delivery Controller goes offline or becomes otherwise unavailable, Citrix Studio might operate slowly.

    [#LC1891]

  • Attempts to run the Create Catalog wizard can fail. The issue occurs when one of the connected hypervisors is in Maintenance Mode.

    [#LC1916]

  • When running a query in Citrix Studio that was saved with an “Is Empty” operator, that operator is replaced by the default operator.

    [#LC1940]

  • Attempts to automatically upgrade a site from XenDesktop 7.5 to XenDesktop 7.6 might fail because the “binding” property in Broker Service instances might not be compared correctly while checking between the new and already existing instances. This can result in a “service instance already registered” error. The issue occurs when trying to register the service endpoints without unregistering the existing endpoints.

    [#LC2043]

  • After a successful XenDesktop upgrade from Version 5.x or 7.x to Version 7.6, the following error message might appear when starting Studio:

    “Upgrade remaining Delivery Controllers.”

    This error message’s details specify the license server name even though the delivery controller is not installed on the license server.

    [#LC2044]

  • Attempts to upgrade the site to the latest product version might fail. The issue occurs when the “Set-ConfigSite” commands fails to get the new upgraded value.

    [#LC2047]

  • When adding or creating a Citrix Administrator in Citrix Studio with a user or group that contains an underscore in the name, such as get\dl_lab_group, the first underscore does not appear in the details of the list of administrators. The name appears as dllab_group.

    [#LC2284]

  • In Delivery Groups, attempts to create an application folder that contains the word “Applications” can prevent the creation of sub-folders.

    [#LC2349]

  • When you consolidate XenApp and XenDesktop licenses that have the same Subscription Advantage expiry dates into a single license file, some XenApp licenses might be missing from the license information visible in Studio.

    Note: To enable this fix, you must update both Citrix Studio and the Controller components with 7.6 LTSR Cumulative Update 1.

    [#LC2350]

  • This fix addresses a memory leak in Citrix Studio that occurs while running App-V app discovery.

    [#LC2559]

  • When creating a custom role for administrators, the role is created with the following error message: “The Given key was not present in the dictionary.” Additionally, when starting Desktop Studio for the first time by using an administrator account, the same error message appears.

    [#LC2680]

  • If the database owner is a group in Active Directory, attempts to remove XenDesktop Controller from a site can fail.

    [#LC2912]

  • After installing Hotfix DStudio760WX86001 you might see an Access Denied error when trying to limit the visibility of some applications to users.

    This issue is limited to environments with unidirectional trust relationships between domains.

    [#LC2956]

  • Attempts to update a delivery group with multiple desktops by using commands or in Studio fails with the following error messages:

    • Object reference not set to an instance of an object.
    • Error Id: XDDS:0E01FE12

    [#LC2958]

  • When using the Machine Creation Service to catalog VDAs for Server OS, unavailability of personal vDisk storage can incorrectly set the “CleanOnBoot” property of the catalog to “False.” As a result, the catalog might fail to update.

    [#LC2959]

  • When two applications have the same ApplicationID, refreshing App-V applications can cause Citrix Studio to set the App-V package name incorrectly.

    Note: To enable this fix, you must update both Citrix Studio and the Controller components with 7.6 LTSR Cumulative Update 1.

    [#LC2969]

  • The existing user settings are deleted after editing the “Users” section on the “Machine allocation” page in the “Edit Delivery Group.” The issue occurs when adding users manually or when importing a list of users from a Microsoft Excel CSV file.

    [#LC3267]

  • With this enhancement, the “Hosting Server Name” field is available in the Search views of “Desktop OS machines” and “Server OS machines” in the Desktop Studio.

    [#LC3343]

  • Citrix Studio might become unresponsive while closing PowerShell resources.

    [#LC3612]

  • Creating multiple applications in multiple folders under Delivery Groups in Citrix Studio might result in a large folder structure. The first time you open Citrix Studio and click folders or applications, the folders or applications might be dragged instead of being selected. This moves the selected object and causes the folder or application structure to change.

    [#LC3705]

  • The Add-XDController cmdlet does not assign full custom database connection strings to the Controller.

    Note: To enable this fix, you must update both Citrix Studio and the Controller components with 7.6 LTSR Cumulative Update 1.

    [#LC3860]

  • Attempts to open Citrix Studio by users that are not members of the Database administrators user group can result in permission errors on the SQL Server.

    Note: To enable this fix, you must update both Citrix Studio and the Controller components with 7.6 LTSR Cumulative Update 1.

    [#LC4127]

  • Attempts to provision additional resources to a multi-tenant offering in App Orchestration 2.6 can fail if the offering already contains two or more tenants.

    Note: To enable this fix, you must update both Citrix Studio and the Controller components with 7.6 LTSR Cumulative Update 1.

    [#LC4170]

  • When multiple Citrix Studio sessions are open, policy changes made in one session can be lost and overwritten by those made in another.

    Note: To enable this fix, you must update both Citrix Studio and the Controller components with 7.6 LTSR Cumulative Update 1.

    [#LC4487]

Controller

  • When you click the machine catalog in Desktop Studio, it might take a long time for the catalogs to appear. In addition, the hosting information also takes a long time to appear.

    [#LC0237]

  • When the user updates a catalog, the Configuration Logging reports that the “Update Machine Catalog” is successful but one of the tasks in the Task Details view shows the message “Release the provisioning scheme” failed.

    [#LC0518]

  • This fix addresses a security vulnerability. For more information, see Knowledge Center article CTX213045.

    Note: To enable this fix, you must update both Citrix Studio and the Controller components with 7.6 LTSR Cumulative Update 1.

    [#LC0559]

  • With this enhancement, Citrix Studio shows the correct user assignment data when adding users from multiple sites in an Active Directory (AD) domain.

    [#LC0889]

  • If the XenServer parameter “TimeOffSet” exists on the master image virtual machine (VM), creating the Machine Creation Services (MCS) catalog fails. To check the existence of the parameter, in the XenServer console, run the command “xe vm-list uuid= params=other-config”. To resolve this issue, apply this hotfix or manually remove the parameter by running the XenServer command “xe vm-param-remove uuid= param-name=other-config param-key=timeoffset”.

    [#LC1071]

  • The Monitoring Service prematurely deletes the application instance history after seven days instead of the default 90 days. This occurs in XenDesktop and XenApp deployments with Platinum Edition licensing.

    [#LC1129]

  • In Desktop Director, on the “Trends > Hosted Applications Usage” tab, the totals for each application do not equal the sum total for all applications. This occurs in environments running for seven days or longer.

    [#LC1130]

  • If you create virtual machines (VM) with Desktop Studio that uses Machine Creation Services and the VMs are hosted on a VMware hypervisor, attempts to update VMs that are part of the machine catalog fail. When this occurs, an error appears in the Machine Creation log that the virtual disk does not exist, but the directory in the datastore does exist.

    [#LC1201]

  • In some Amazon Web Services environments, provisioning desktops with Machine Creation Services (MCS) might fail with the error “No facility for disk upload”, even when the environment is configured correctly.

    [#LC1295]

  • When provisioning VDAs by using the Machine Creation Service, the primary DNS suffix changes for the VDAs.

    [#LC1300]

  • The Microsoft Management Console (MMC) fails if the “Console Root” is not selected in the navigation pane when closing Desktop Studio.

    [#LC1314]

  • When two or more instances of event ID 3012 record in the event log, event IDs 3020 and 3021 also appear in the log and the messages are incorrect. With this fix, if two or more instances of event ID 3012 record, then event IDs 3010 and 3011 correctly appear in the log.

    [#LC1425]

  • The error messages for event IDs 1110 and 1111 are incorrect in the event log. With this fix, the following correct messages appear in the event log:

    • EventID:1110: To avoid excessive event logging, the service is temporarily suppressing related messages (event IDs 1100-1109, 1112-1116).
    • EventID:1111: The service is no longer suppressing related messages (event IDs 1100-1109, 1112-1116).
       

    [#LC1485]

  • If a VDA in a shared delivery group is tagged and the tag is used as part of a policy filter, the policies are not applied to other VDAs in the delivery group.

    [#LC1506]

  • After changing the Web Interface port number, Desktop Studio might incorrectly open the License upgrade prompt.

    [#LC1575]

  • Creating new catalogs fail after upgrading to XenDesktop 7.6 and if the master VM image contains a nested hardware virtualization property that is enabled on VMware vSphere 5.1.

    [#LC1586]

  • Attempts to configure a new site by using the XenDesktop High Level Powershell SDK command “New-XDSite” without configuring licensing and then following attempts to run the command “Get-XDSite” fail. The error message “The site has upgrade steps remaining. Run Get-XDUpgradeStatus to find out the remaining steps” appears.

    [#LC1612]

  • If the NetBios domain name contains an ampersand (&), attempts to start Citrix Studio fail with the error “You are not authorized to perform this operation” with the code XDDS:72182E6B.

    [#LC1646]

  • If the user configures the prelaunch and lingering sessions in Citrix Studio, the “MaxTimeBeforeDisconnect” property is set to zero minutes instead of the default value 15 minutes.

    [#LC1706]

  • In a Hyper-V environment with System Center Virtual Machine Manager, the BrokerService.exe process can consume up to 100% of system memory, preventing virtual desktops from being brokered successfully.

    [#LC1730]

  • After upgrading to XenDesktop 7.6, Desktop Studio might take about three or four minutes to show the catalogs or Hosting information.

    [#LC1851]

  • When a Delivery Controller goes offline or becomes otherwise unavailable, Citrix Studio might operate slowly.

    [#LC1891]

  • Attempts to run the Create Catalog wizard can fail. The issue occurs when one of the connected hypervisors is in Maintenance Mode.

    [#LC1916]

  • In some Active Directory organizational units (OUs), if the OU name contains a special character, the core services for XenDesktop (such as AD Identity Service or Broker Service) might not be able to bind to the OU. This can cause the CPU usage to be higher than normal. Additionally, Citrix Studio might become inaccessible as the services might close unexpectedly.

    [#LC1979]

  • When using filtering by keywords for published applications, the workspace control might not work.

    [#LC2025]

  • The tabs in the “Trends” page and “Filters option” page in Desktop Director might fail to show the data with an error message.

    [#LC2035]

  • Attempts to automatically upgrade a site from XenDesktop 7.5 to XenDesktop 7.6 might fail because the “binding” property in Broker Service instances might not be compared correctly while checking between the new and already existing instances. This can result in a “service instance already registered” error. The issue occurs when trying to register the service endpoints without unregistering the existing endpoints.

    [#LC2043]

  • After a successful XenDesktop upgrade from Version 5.x or 7.x to Version 7.6, the following error message might appear when starting Studio:

    “Upgrade remaining Delivery Controllers.”

    This error message’s details specify the license server name even though the delivery controller is not installed on the license server.

    [#LC2044]

  • Attempts to upgrade the site to the latest product version might fail. The issue occurs when the “Set-ConfigSite” commands fails to get the new upgraded value.

    [#LC2047]

  • This release adds the -enabled flag to the command Set-XDLogging -AdminAddress $ControllerName -AllowDisconnectedDatabase $true.

    [#LC2162]

  • In the Powershell snap-in, running the command Get-Help set-MonitorConfiguration -detailed returns the error message -“GroomApplicationInstanceRetentionDays <Int32> FIXME”.

    [#LC2176]

  • The following error message might be incorrectly logged in the application log each time the Citrix Monitor Service starts even though the service is working correctly:

    “Error querying the Broker via GetBrokerObjects to obtain ‘Controller Machine Details’”

    [#LC2239]

  • If a Delegated Administrator account has User Access Control enabled, updates to Delivery Controller are installed to the default location in error. The default location is “%systemroot%\Program Files\Citrix” and this might not be the same location where you originally installed Delivery Controller.

    [#LC2252]

  • When adding or creating a Citrix Administrator in Citrix Studio with a user or group that contains an underscore in the name, such as get\dl_lab_group, the first underscore does not appear in the details of the list of administrators. The name appears as dllab_group.

    [#LC2284]

  • If a virtual graphics processing unit (VGPU) is enabled in the VM master image in VMware vSphere 6 with a GRID board, the machine creation process fails.

    [#LC2326]

  • When you consolidate XenApp and XenDesktop licenses that have the same Subscription Advantage expiry dates into a single license file, some XenApp licenses might be missing from the license information visible in Studio.

    Note: To enable this fix, you must update both Citrix Studio and the Controller components with 7.6 LTSR Cumulative Update 1.

    [#LC2350]

  • When users log off from a session, the End Date updates incorrectly in the database, including all application instances running within a session and applications that are closed before the session ended.

    [#LC2435]

  • When creating a custom role for administrators, the role is created with the following error message: “The Given key was not present in the dictionary.” Additionally, when starting Desktop Studio for the first time by using an administrator account, the same error message appears.

    [#LC2680]

  • The VDA provisioned by integrated Hyper-V appears unregistered after subscribing successfully.

    [#LC2722]

  • After upgrading the Desktop Controller from Version 7.x to Version 7.6, if the PowerShell command “Set-MonitorConfiguration” is run, the following error message appears:

    “A database operation failed and cannot be recovered.”

    [#LC2745]

  • Attempts to add more than 999 virtual machines (VMs) to a single catalog might fail.

    [#LC2873]

  • A published application name that contains a trailing space can result in several issues. These issues occur when generating browser names from the published name of the application that has truncated names containing a trailing space.

    [#LC2897]

  • If the database owner is a group in Active Directory, attempts to remove XenDesktop Controller from a site can fail.

    [#LC2912]

  • After installing Hotfix DStudio760WX86001 you might see an Access Denied error when trying to limit the visibility of some applications to users.

    This issue is limited to environments with unidirectional trust relationships between domains.

    [#LC2956]

  • Attempts to update a delivery group with multiple desktops by using commands or in Studio fails with the following error messages:

    • Object reference not set to an instance of an object.
    • Error Id: XDDS:0E01FE12

    [#LC2958]

  • When two applications have the same ApplicationID, refreshing App-V applications can cause Citrix Studio to set the App-V package name incorrectly.

    Note: To enable this fix, you must update both Citrix Studio and the Controller components with 7.6 LTSR Cumulative Update 1.

    [#LC2969]

  • With this fix the following issues can be resolved:

    • When the host connection is configured to US-East-1e regions, the Amazon Web Services (AWS) connection can be established, but however, the machine creation might fail.
    • When attempting to add AWS host connection to use EU-Central-1, the host connection creation might fail with an authentication error.
       

    [#LC3239]

  • Machine Creation Services (MCS) might not honor the “AvailableForPlacement” flag on System Center Virtual Machine Manager (SCVMM) 2012 hosts. As a result, the machine creation might fail if a host with insufficient resource is chosen.

    [#LC3426]

  • When executing Set-BrokerDBConnection and related commands, the associated configuration logging entries in Citrix Studio list the corresponding “Main Task” with a status of “In Progress,” and the status is not updated when the task completes.

    [#LC3479]

  • After performing an upgrade to XenDesktop 7.6 using the local system account (typically used by Electronic Software Distribution such as SCCM), the Analytics Service fails to start.

    [#LC3493]

  • Performing a scheduled restart of a VDA for Server OS that is connected to a VMware Vsphere Hypervisor can cause the server to shut down and remain in a powered off state.

    • To enable the fix, set the following registry key:
      HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\DesktopServer\RebootSchedule Name: ShutdownTimeoutRecovery Type: DWORD Value: 1
    • To disable the fix, set the following registry key:
      HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\DesktopServer\RebootSchedule Name: ShutdownTimeoutRecovery Type: DWORD Value: 0

    After setting the value, you must restart the Broker Service.

    [#LC3807]

  • After Hotfix Rollup Pack 7 for System Center Virtual Machine Manager (SCVMM) is installed, catalog creation with Machine Creation Services (MCS) might fail.

    [#LC3822]

  • The Add-XDController cmdlet does not assign full custom database connection strings to the Controller.

    Note: To enable this fix, you must update both Citrix Studio and the Controller components with 7.6 LTSR Cumulative Update 1.

    [#LC3860]

  • Attempts to open Citrix Studio by users that are not members of the Database administrators user group can result in permission errors on the SQL Server.

    Note: To enable this fix, you must update both Citrix Studio and the Controller components with 7.6 LTSR Cumulative Update 1.

    [#LC4127]

  • Attempts to provision additional resources to a multi-tenant offering in App Orchestration 2.6 can fail if the offering already contains two or more tenants.

    Note: To enable this fix, you must update both Citrix Studio and the Controller components with 7.6 LTSR Cumulative Update 1.

    [#LC4170]

  • When the setting “SupportMultipleForest” is enabled on the Controller to allow NTLM authentication, the Linux VDA might fail to complete the registration process as its Service Principal Name (SPN) might not be set in the EndpointReference of the Windows Communication Foundation (WCF).

    [#LC4235]

  • If you create virtual machines (VMs) that are hosted on a VMware hypervisor, initial attempts to update or delete those VMs from Citrix Studio can fail with an “Error ID XDDS:B125B84A,” but subsequent attempts succeed.

    [#LC4436]

  • When multiple Citrix Studio sessions are open, policy changes made in one session can be lost and overwritten by those made in another.

    Note: To enable this fix, you must update both Citrix Studio and the Controller components with 7.6 LTSR Cumulative Update 1.

    [#LC4487]

  • When running the PowerShell command “Get-LogSummary” for a date range that encompasses a switch to or from daylight saving time, the following error message appears:

    “An item with the same key has already been added.”

    The issue occurs when daylight saving time introduces ambiguous local dates or times. As a result, duplicate entries are created in the HashMap and an exception occurs.

    This fix introduces a message to inform users to split the time span to account separately for the point in time when daylight saving time begins or ends.

    [#LC4612]

  • Attempts to update machine catalogs in Amazon Web Services (AWS) environments can fail intermittently. To enable the fix, you must run the command, “Set-ProvServiceConfigurationData –Name ImageManagementPrep_DoImagePreparation –Value $false” for the image preparation phase to be skipped during the machine catalog update.

    [#LC4709]

  • Controllers occasionally lose connectivity with the database when there is a high number of apps and VDA processes running. When that happens, VDAs remain in the initialization state and applications are unavailable.

    [#LC4848]

  • When there are too many hypervisor alerts, the SQL database server’s CPU usage can reach 100%.

    [#LC5277]

  • Under high utilization conditions (more than 5,000 users launching numerous apps on numerous VDAs for Server OS concurrently), the SQL database server’s CPU usage can reach 100%, which causes outages and apps are unable to launch.

    [#LC5315]

HDX MediaStream Flash Redirection

  • If HDX MediaStream Flash Redirection is enabled, opening and closing multiple tabs in Internet Explorer with Flash content can cause Internet Explorer to exit unexpectedly.

    [#LC0375]

  • With HDX Mediastream for Flash enabled, opening and closing multiple tabs in Internet Explorer can cause Internet Explorer to close unexpectedly.

    [#LC1141]

  • When browsing websites with HDX MediaStream Flash Redirection enabled, the Flash redirection feature fails if the registry value of HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows\AppInit_DLLs is set to just “mfaphook.dll” or “mfaphook64.dll” instead of the full path to “mfaphook.dll” or “mfaphook64.dll.”

    [#LC4388]

Installer

  • If you install version 7.6.300 of the VDA from the commandline, the /noreboot switch - depending on its location in the string of switches - is not being honored. As a result, the VDA restarts after the installation completes.

    [#LC4046]

  • When installing a VDA, certain registry keys for performance might be installed even if you disable the “Optimize Performance” option during installation.

    [#LC4330]

Licensing

  • Citrix Studio displays the licensing models in Spanish for license servers set to a French system locale.

    [#LC3450]

Provisioning Services

Console Target
Server  

Console

  • The XenDesktop Setup Wizard sets an invalid “default” generation ID when creating XenServer virtual machines.

    [#LA5924]

  • After completing the XenDesktop wizard, the Machine Catalog in Studio is empty and the streaming IP address appears instead of the management IP address, which is incorrect. To use the management IP address, set the following registry key:

    HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\ProvisioningServices Name: UseManagementIpInCatalog Type: DWORD Value: 1

    [#LC0125]

  • When running the Streamed VM Setup Wizard to add VMs to a Device Collection and if a hosting entry uses a different case format, the following error message appears:

    “To avoid creating a duplicate key, the Add or Set command was cancelled” Details:- Cannot insert duplicate key row in object ‘dbo.VirtualHostingPool’ with unique index ‘IDX_VirtualHostingPoolSiteIdName’. The duplicate key value is (18df503c-c745-452a-89aa-3bbf431c7b33, livsvmv01.livdc.local). The statement has been terminated.

    [#LC0348]

  • The Xen Desktop Setup Wizard does not use the template boot properties when creating targets. To fix this, create the following registry key:

    HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\ProvisioningServices Name: UseTemplateBootOrder Type:REG_DWORD Data: 1

    [#LC0382]

  • When running the Streamed VM Setup Wizard, some Active Directory organizational units (OUs) might not appear in the wizard if the OU name contains special characters.

    [#LC0393]

  • Attempts to map a disk on the Provisioning Service server by using either MCLI.exe or the command “mcli-runwithreturn mapdisk -p disklocatorName=MyDiskLocatorName, sitename=MySiteName, storeName=MyStoreName” fail and the following error message appears:

    Object Reference not set to an instance of an object (MCLI command)

    Attempts to run the command “mcli-run unmapdisk” fails and shows the error message “An unexpected MAPI error occurred.”

    [#LC0786]

  • When trying to create machines by using the XenDesktop Setup Wizard, the hard drive and the virtual DVD drives are placed in difference storage volumes, even though the hosting unit can only access one volume.

    [#LC0918]

  • If the Desktop Delivery Controller contains a port number in the uniform resource identifier (URI), when the XenDesktop Setup Wizard runs, the Microsoft Management Console (MMC) stops responding.

    [#LC1248]

  • The XenDesktop Setup Wizard fails when one of the Cluster Shared Volumes does not contain the StorageDisk location.

    [#LC1807]

  • After installing Provisioning Services Console version 7.1.3, many .NET applications fail on Windows Server 2008 R2 and on Windows 7.

    [#LC1838]

  • In some environments, when using the Provisioning Services 7.x bootstrap file, it can take a long time to start many target devices together.

    Note: The issue can also occur in situations where a high load does not exist.

    [#LC1839]

  • If the account used to log on to the Provisioning Services console is not the same account used to install Provisioning Services, running the XenDesktop Setup Wizard fails with the following error:

    “Cannot connect to the XenDesktop controller at <address>. Some or all identity references could not be translated.”

    [#LC1952]

  • In a Microsoft SCVMM environment, the XenDesktop Setup wizard does not assign a static MAC address to a non-streaming network adapter when the MAC address type in the template is static.

    [#LC2459]

  • When running the XenDesktop Setup Wizard, not all virtual machines are created if the number of standard and PvD storages are not equal.

    [#LC2496]

  • The XenDesktop Setup Wizard creates ESX virtual machine metadata in one store, instead of distributing the metadata with the different disks created for the virtual machine.

    [#LC2549]

  • When creating virtual machines in XenServer by using the XenDesktop Setup Wizard, the template setting with the GPU assigned might not be retained.

    [#LC2859]

  • Machines created with the XenDesktop Setup Wizard are not added to the XenDesktop machine catalog and the following error message appears:

    “No items match the supplied pattern”

    [#LC2923]

  • The XenDesktop Setup Wizard might fail to create machine when the VMware ESX host is in Maintenance Mode.

    [#LC3401]

  • The XenDesktop Setup Wizard might fail to honor the “Superseded” flag on the Personal vDisk storage of the hosting unit.

    [#LC3573]

  • When the Streamed VM Setup Wizard is running, enumerating templates on the VMware ESX cluster that contain many hosts and data stores can take a long time to complete.

    [#LC3674]

  • When mounting and unmounting vDisks, the SOAP service might become unresponsive and the Provisioning Services Console might fail to start.

    [#LC3723]

  • The following error message can appear while creating machines using the Streamed VM Setup Wizard:

    “Object reference not set to an instance of an object.”

    [#LC3811]

  • When a help desk administrator creates new virtual machines (VMs) from a standalone Provisioning Services Console through the XenDesktop Setup wizard, attempts to start a target device from a BDM partition can fail and cause an incorrect IP address for the logon server to appear.

    [#LC3911]

  • Installing the Provisioning Services Console sets the following registry key to “ 1.” This can cause other .NET applications to try to use the wrong version of the Framework and possibly fail:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework Name: OnlyUseLatestCLR Type: REG_DWORD Data: 1

    [#LC4197]

  • Attempts to create virtual machines (VMs) by using the XenDesktop Setup wizard or the Streamed VM Setup wizard might fail in a Microsoft System Center Virtual Machine Manager (SCVMM) environment. With this fix, the fully qualified domain name (FQDN) of the host is used in the commands instead of short name.

    [#LC4230]

  • The XenDesktop Setup wizard might fail to create Provisioning Services target devices in System Center Virtual Machine Manager (SCVMM) 2012 environments.

    [#LC4256]

  • Attempts to connect to VMware Vsphere Hypervisor 5.1 by using the Streamed VM Setup wizard or the XenDesktop Setup wizard fail if User1 and User2 are configured to use different ports.

    To use a different port to connect to the VMware ESX server, you must create the following registry key:

    HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\ProvisioningServices\PlatformEsx Name: Port Type: DWORD Value: <port_number>

    [#LC4283]

  • SSL connections between the XenDesktop Setup wizard and XenServer fail.

    [#LC4377]

  • This is an enhancement to facilitate NIC teaming with the latest Mellanox NICs and firmware used in HP Moonshot systems.

    [#LC4646]

  • If the template created in System Center Virtual Machine Manager (SCVMM) has NICs on two different networks - for example, NIC1 on network xxx and NIC2 on network yyy - the XenDesktop Setup wizard default behavior is to change both NICs to the network of the host record (network zzz). For the NIC2 network to remain unchanged, after installing this fix, set the following registry key:

    HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\ProvisioningServices\PlatformScvmm Name: RequireMatchingNetworks Type: REG_DWORD Value: 1

    [#LC4650]

  • Pressing “Ctrl+C” without any items selected, the Provisioning Services Console might exit unexpectedly with the following error message:

    “MMC has detected an error in a snap-in and will unload it.”

    Additionally, the issue can occur if the “Ctrl+C” key combination is automatically injected by certain third-party software.

    [#LC4909]

Server

  • The SOAP Service might exit unexpectedly while changing the vDisk license mode to Key Management Service (KMS).

    [#LC0265]

  • In Version 7.1 of Provisioning Services, attempts to set a subnet mask of 0.0.0.0 when configuring bootstrap to use the Gateway/DHCP settings to set the subnet mask value at runtime fail and the following error message appears

    “Invalid Subnet mask.”

    [#LC0312]

  • The Target device might return broadcasted ARP reply packets during the bootstrap process, causing excessive network traffic.

    [#LC0451]

  • If there are five or more network adapters attached to the server, the following error messages appear:

    • Message processor timed out. Error number 0XE0070003.
    • No response received for successful send. Error number 0xA0070002.

    [#LC0455]

  • When many targets attempt to reconnect after experiencing network issues, the Stream Process (StreamProcess.exe) might close unexpectedly due to extensive retry attempts to send the packets to the target devices.

    [#LC0488]

  • When using the network settings of the DHCP in bootstrap configuration, if the “Router” option in DHCP is not configured, a false default gateway IP address might appear in the Provisioning Services Target device.

    [#LC0688]

  • When installing the XenApp Enterprise and PVS Datacenter licenses on the Citrix License Server and starting the XenApp Target device from the vDisk, the PVS Datacenter licenses are not consumed in the License Management Console.

    [#LC0707]

  • With this release, the vhdUtil tool can rename a virtual disk chain and prepare the chain to be imported as a new disk. During renaming, the following actions occur:

    • Updates the disk header, footer, and timestamp.
    • Renames the PVP file, if it exists.
    • Creates an XML file based on the renamed chain that allows the renamed disk to be imported by the Provisioning Services console.
       

    [#LC0722]

  • Attempts to map a disk on the Provisioning Service server by using either MCLI.exe or the command “mcli-runwithreturn mapdisk -p disklocatorName=MyDiskLocatorName, sitename=MySiteName, storeName=MyStoreName” fail and the following error message appears:

    Object Reference not set to an instance of an object (MCLI command)

    Attempts to run the command “mcli-run unmapdisk” fails and shows the error message “An unexpected MAPI error occurred.”

    [#LC0786]

  • After upgrading to Provisioning Services 7.1, if there are a large number of VDAs, it can take four to five hours to restart all VDAs.

    [#LC0941]

  • When upgrading Provisioning Services from Version 7.1 to 7.6, if you run the dbscript.exe generator that is provided with Provisioning Services and is used to create an SQL script to upgrade the Provisioning Services database version, an error appears and the generated script is truncated.

    [#LC1087]

  • The Notifier.exe process might experience an access violation and exit unexpectedly at random.

    [#LC1199]

  • Target devices shows the correct number of retries, however the Provisioning Services console always shows zero retries.

    [#LC1427]

  • When adding Dynamic vDisks to stores, the server reports an incorrect Replication Status after adding the Dynamic vDisk to the second store.

    [#LC1428]

  • When copying and pasting properties between two virtual disks, the load balancing settings are not pasted on the second disk.

    [#LC1498]

  • Provisioned virtual machines (VMs) might become unresponsive randomly while shutting down the system.

    [#LC1573]

  • The Stream Service fails when starting and stopping the service.

    [#LC1664]

  • The Powershell MCLI command ““Mcli-Get DeviceInfo” returns an empty value in the “Status” field.

    [#LC1790]

  • After installing Provisioning Services Console version 7.1.3, many .NET applications fail on Windows Server 2008 R2 and on Windows 7.

    [#LC1838]

  • In some environments, when using the Provisioning Services 7.x bootstrap file, it can take a long time to start many target devices together.

    Note: The issue can also occur in situations where a high load does not exist.

    [#LC1839]

  • When configuring VMware PXE Manager for vCenter, if a default gateway IP address is not provided as part of the DHCP options, the bootstrap protocol incorrectly sets the gateway IP address (GIADDR) to the Relay Agent IP address.

    [#LC1966]

  • The target device can experience delays on Microsoft Hyper-V when any key is pressed in the disk menu.

    [#LC1997]

  • When the number of target devices increase on Microsoft Hyper-V, some targets fail to start and stop responding at the “Starting Windows” screen.

    [#LC2011]

  • Occasionally, the Stream Service process stops responding when multiple target devices shut down.

    [#LC2141]

  • If there are unresponsive threads, the Stream Service process cannot recover after automatically restarting.

    [#LC2227]

  • If there are two Provisioning Servers configured to use the TFTP Service option and if NetScaler load balances the servers, if you increase the frequency of monitor probes to run faster than the default time of five seconds, memory consumption on bntftp.exe can increase to 7.5 gigabytes.

    [#LC2314]

  • The XenDesktop Setup Wizard creates ESX virtual machine metadata in one store, instead of distributing the metadata with the different disks created for the virtual machine.

    [#LC2549]

  • If a static IP address is assigned when running Boot Device Manager, after saving the .iso image the first time and then incrementing the IP address, subsequent attempts to save a new image overwrites the existing file.

    [#LC2619]

  • The Soap Server might close unexpectedly when restarting the Provisioning Server.

    [#LC2750]

  • Attempts to use MAK activation for Microsoft Windows can fail and the following error message appears:

    “Confirmation ID not retrieved, check internet access.”

    The issue occurs in scenarios where Microsoft Office is installed on the vDisk and the record of the Office product exists in the Volume Activation Management Tool (VAMT) database. During activation, the “Install-VamtproductKey” command attempts to install the Windows product key for both Windows and Office and then returns the same error. With this fix, Office is not included in in MAK activation.

    Additionally, the result of the “Get-VamtConfirmationId” command is saved in the incorrect location so the same error also occurs when Microsoft Office is installed on the vDisk. With this fix, the result of the “Get-VamtConfirmationId” command is saved in the correct location.

    Note: This fix does not provide support for Microsoft Office MAK. Provisioning Services does not support MAK for Office. The only supported way of installing Office on a PVS image is to use the Key Management Service (KMS) for both Windows and Office.

    [#LC3120]

  • When using a BDM partition, target devices running on VMware do no attempt to log on to all servers in the list if the top-most server is unreachable.

    [#LC3805]

  • Attempts to mount a vDisk on a Provisioning Server fail unless the server has logical access to the vDisk.

    [#LC3835]

  • When a help desk administrator creates new virtual machines (VMs) from a standalone Provisioning Services Console through the XenDesktop Setup wizard, attempts to start a target device from a BDM partition can fail and cause an incorrect IP address for the logon server to appear.

    [#LC3911]

  • When exporting a vDisk by running the PowerShell command “Mcli-Run ExportDisk -p DiskLocatorName=”DISK_NAME”, StoreName=”STORE_NAME”, SiteName=”SITE_NAME,”” a manifest file with multiple entries for each version of the vDisk might be created. The issue occurs when a vDisk with the same name is present in multiple Sites. The number of duplicate entries per version corresponds to the number of sites that have the vDisk.

    [#LC4225]

  • Machine creation fails with the XenDesktop Setup wizard in SCVMM environments if there is a trailing backslash (\) at the end of the VM storage path.

    [#LC4418]

  • This is an enhancement to facilitate NIC teaming with the latest Mellanox NICs and firmware used in HP Moonshot systems.

    [#LC4646]

  • If the template created in System Center Virtual Machine Manager (SCVMM) has NICs on two different networks - for example, NIC1 on network xxx and NIC2 on network yyy - the XenDesktop Setup wizard default behavior is to change both NICs to the network of the host record (network zzz). For the NIC2 network to remain unchanged, after installing this fix, set the following registry key:

    HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\ProvisioningServices\PlatformScvmm Name: RequireMatchingNetworks Type: REG_DWORD Value: 1

    [#LC4650]

Target

  • The Windows Server 2008 R2 target device experiences a fatal exception with error code 0x4E appearing on a blue screen.

    [#LC0350]

  • When many targets attempt to reconnect after experiencing network issues, the Stream Process (StreamProcess.exe) might close unexpectedly due to extensive retry attempts to send the packets to the target devices.

    [#LC0488]

  • Provisioned virtual machines (VMs) might become unresponsive randomly while shutting down the system.

    [#LC1573]

  • After enabling the target device log, BNDevice.exe fails.

    [#LC2058]

  • If a server becomes unavailable, IO reconnect requests are sent to the unavailable server only and not to other servers in a high availablity configuration.

    [#LC2146]

  • When creating an image by using the Provisioning Services Imaging Wizard or if the image is in Private image mode, writing to the vDisk can cause a number of retries on the target.

    [#LC2218]

  • On a target device in Microsoft Hyper-V, switching from a legacy to a synthetic network adapter does not occur when the operating system is Italian.

    [#LC2379]

  • After building a Personal vDisk (PVD) and then installing Provisioning Services, when you use the XenDesktop Setup wizard to create a PVD-enabled pool, some VMs start and the PVD software initializes the write-cache drive as PVD. A write-cache is not created for Provisioning Services.

    [#LC2497]

  • The host name on VMware ESX target devices is set to the MAC address after restarting.

    [#LC2816]

  • Provisioning Services Target device installation on systems with ESX VMXNET3 Nics requires Microsoft hotfix https://support.microsoft.com/en-us/kb/2550978 or a superseding hotfix to be installed. With this fix, rather than requiring KB2550978 explicitly, a warning message appears, advising administrators to make sure KB2550978 or a superseding hotfix is installed.

    [#LC3016]

  • The target device might send an error log entry to the write cache disk for every write attempt that fails. As a result, an excess number of error messages appear in the Provisioning Server logs.

    [#LC3110]

  • The PVS Device Service (BNDevice.exe) might not start successfully when the service logon account is set to “Local System,” which is the default value.

    [#LC3209]

  • The logging level of some critical error logs that are related to Active Directory password change might not be set correctly and as a result, the logs are not sent to the server for Citrix Diagnostic Facility tracing.

    [#LC3803]

  • Automatic vDisk Updates do not run inventory updates on PvD enabled vDisks.

    [#LC3997]

  • ESX target devices utilizing a VMXnet3 network driver can experience a fatal exception, displaying a blue screen when using jumbo frames (frames with more than 1500 bytes of payload per frame).

    [#LC4238]

  • Provisioned target devices have a 96 hour license grace period after which they shut down if no valid licenses are available. With this enhancement, the licensing grace period for target devices is extended to 30 days (720 hours).

    [#LC4645]

Session Recording

Agent Player

Agent

  • With “Allow third party applications to record custom data on this VDA machine” enabled in the Session Recording Agent properties, the Session Recording Agent Service running on a Japanese language Windows operating system might fail to start and client sessions cannot be recorded.

    [#LC3861]

Player

  • Recordings of Microsoft Paint sessions do not play back correctly in the Session Recording Player.

    [#LC4389]

  • An error occurs when you play back a session that was recorded on a multiple-monitor user device.

    [#LC4391]

StoreFront

  • This fix addresses inconsistencies in the Japanese translation of the term “Classic” in the Management Console user interface.

    [#LC3607]

  • When you click to launch a second or subsequent application, one or more instances of the first application you started can launch. The issue occurs when using a version of Receiver other than Citrix Receiver for Web when multiple-site aggregation is configured. An additional instance of the first application launches from each aggregated Site.

    [#LC4278]

  • Customizations for published desktops you make in the default.ica file might not be honored. For example, you might not be able to see the connection bar inside certain desktops even if you set “ConnectionBar=1.”

    [#LC4688]

  • In certain scenarios, StoreFront generates enumeration responses that contain duplicate resources. This can cause Receiver for Web to report a failure and the apps might fail to appear. The issue occurs with one or more of the following conditions:

    • A farm is referenced by more than one UserFarmMapping in a multi-Site configuration.
    • The user belongs to Active Directory Groups wherein multiple UserFarmMapping are applied.
    • The EquvalentFarmSets that contain farms have no aggregation group, or there is a Delivery Group with multiple assignments for the user.
       

    [#LC4863]

Universal Print Server

   
Client Server

Client

  • Attempts to manage ports or printers on the remote print server from the Microsoft Print Management console on a VDA for Server OS might fail with the following error message: “Failed to complete the operation. This operation is not supported.” Also, when navigating to the Ports tab, ports might not be listed.

    Additionally, when you right-click any printer and select “Open Printer Queue,” the following error message might appear:

    “Windows can’t find the printer. Make sure the network is working and you’ve entered the name of the printer and print server correctly.”

    To address this issue, delete the following registry key “HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Print\Providers\Universal Printer” from the registry of the VDA and restart the Print Spooler Service. The ports are enumerated correctly in the Microsoft Print Management Console and you can configure the ports and printers.

    [#LC3740]

Server

  • Batch printing using the Microsoft GDI Print API can fail to where the last page does not print, and the following error message appears:

    “Dispatch::CDriverTripSummary::PrintReport, Error Occured While Printing….Check Printer”

    [#LC3920]

  • This fix introduces support for Citrix UPS Print Driver Certification Tool for Universal Print Server 7.6.300. For more information, see Knowledge Center article CTX142119.

    [#LC4265]

VDA for Desktop OS

   
Content Redirection Logon/Authentication
HDX 3D Pro Printing
HDX MediaStream Flash Redirection Seamless Windows
HDX MediaStream Windows Media Redirection Server/Site Administration
Installing, Uninstalling, Upgrading Session/Connection
Keyboard Smart Cards
  System Exceptions

Content Redirection

  • With content redirection enabled for Mailto links, Mailto links that contain commas fail to launch and the following error message appears:

    “Could not perform this operation because the default mail client is not properly installed.”

    The issue does not occur in console or Remote Desktop sessions.

    [#LC3701]

HDX 3D Pro

  • In HDX 3D Pro dual-monitor configurations, locking Windows on one monitor can fail to blank the screen on the second monitor. The issue occurs after disconnecting from a dual-monitor client session, then reconnecting from a single monitor client, then disconnecting from the session, then reconnecting from the dual-monitor client.

    [#LC3934]

  • The mouse pointer might not assume the proper shape when the mouse is positioned at the edge of a Microsoft Notepad application window.

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

    • On 32-bit Windows:
      HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\HDX3D Name: EnableUnknownCursorHandling Type: REG_DWORD Value: 1
    • On 64-bit Windows:
      HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Citrix\HDX3D Name: EnableUnknownCursorHandling Type: REG_DWORD Value: 1  

    [#LC4160]

  • Attempts to resize the session screen resolution can fail intermittently, leaving the DesktopViewer window grayed out.

    [#LC4261]

  • With HDX 3D Pro enabled, customized mouse pointers in 3D graphics rendering applications might appear incorrectly.

    [#LC4713]

HDX MediaStream Flash Redirection

  • If HDX MediaStream Flash Redirection is enabled, opening and closing multiple tabs in Internet Explorer with Flash content can cause Internet Explorer to exit unexpectedly.

    [#LC0375]

  • With HDX Mediastream for Flash enabled, opening and closing multiple tabs in Internet Explorer can cause Internet Explorer to close unexpectedly.

    [#LC1141]

  • When browsing websites with HDX MediaStream Flash Redirection enabled, the Flash redirection feature fails if the registry value of HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows\AppInit_DLLs is set to just “mfaphook.dll” or “mfaphook64.dll” instead of the full path to “mfaphook.dll” or “mfaphook64.dll.”

    [#LC4388]

HDX MediaStream Windows Media Redirection

  • In Receiver sessions, seeking forward in Windows Media Player while playing .MOD, ac3, and mpeg files might cause the video to play without audio.

    [#LC2768]

  • If you play an .avi file with Windows Media Player within an ICA session (or published desktop session) and then start playing another .avi file without stopping the first one, the video frames might not be properly directed to the user device. As a result, the CPU usage of the mmvdhost.exe process can be higher than normal and the video might not render properly on the user device.

    [#LC4260]

Installing, Uninstalling, Upgrading

After installing one or more of the following Microsoft Security Updates, attempts to log on to a XenDesktop VDA 7.6.300 or 7.7 running either version of Windows 10 fail. For more information, see Knowledge Center article CTX205398.

 

Windows 10 RTM [Build 10240]

(Current Business Branch and LTSB)

Security Updates

Release Date

KB3124266

January- 2016

KB3135174

February- 2016

KB3140745

March- 2016

KB3147461

April- 2016

KB3156387

May- 2016

 

Windows 10 Version 1511

[Build 10586.36]

KB3124263

January- 2016

KB3124262

January- 2016

KB3135173

February- 2016

KB3140768

March- 2016

KB3147458

April- 2016

KB3156421

May- 2016

Windows 10 Version 1511

(Updated Feb 2016)

Cumulative image inclusive of all updates up to February 2016

March- 2016

Note: If you have installed any of the Microsoft Security Updates above:

If you have installed any of the Microsoft Security Updates above on a Windows 10 RTM (Build 10240) VDA or on a Windows 10 Version 1511 (Build 10586.36) VDA and want to apply this update, do the following:

  1. Reboot and log in to the Windows 10 VDA using Safe Mode.
  2. Uninstall the Microsoft Security Updates above and reboot.
  3. Install this update and reboot.
  4. Install any applicable Microsoft Security Updates.

For new deployments of the 7.6.300 VDA on Windows 10 (RTM / Version 1511 / Version 1511 (Updated Feb 2016)), do the following:

  1. Prepare a Windows 10 (RTM / Version 1511 / Version 1511 (Updated Feb 2016)) image.
    Caution: Installing the VDA and rebooting in the next step can place the machine into an unrecoverable state. It is essential not to reboot after installing the VDA.
  2. Install the 7.6.300 VDA and choose NOT to reboot.
  3. Install this update and reboot.
     

[#LC4604]

Keyboard

  • If you are in a Citrix GoToMeeting running inside a VDA session and are made presenter, your mouse pointer might start to flicker. This occurs when the “Legacy graphics mode” policy setting is disabled for the session.

    [#LC3033]

Logon/Authentication

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

    To enable this fix, set the following registry key:

    HKEY_LOCAL_MACHINE\Software\Citrix\Portica Name: AutoLogon Type: DWORD Data: 0x00000001 (value must be between 1 and 2147483647)

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

    [#LC1180]

  • After installing Microsoft Hotfix KB3124266 (for Windows 10) or KB3124263 (for Windows 10 Version 1511), attempts to log on to a XenDesktop VDA 7.6.300 or 7.7 running on Windows 10 might fail. For more information see, Knowledge Center article CTX205398.

    Note: If you have already installed KB3124266 or KB3124263 and want to apply this update, do the following:

    1. Reboot and log in to the Windows 10 machine using Safe Mode and uninstall KB3124266 or KB3124263
    2. Reboot the Windows 10 machine and install this update.
    3. Reinstall KB3124266 or KB3124263.  

    [#LC4540]

Printing

  • The Citrix Print Spooler Service might exit unexpectedly.

    [#LC4180]

Seamless Windows

  • Seamless applications can become unresponsive and their icon in the Windows taskbar reverts to the generic Citrix Receiver icon.

    [#LC3783]

  • When you close a seamless published application, the focus goes to another published application rather than honoring windows in the typical Windows Z-order.

    [#LC4009]

Server/Site Administration

  • When an administrator attempts to access a virtual machine from Hyper-V console, while there is a disconnected but active session, a black screen appears, The issue occurs in deployments that use XPDM drivers.

    [#LC3536]

  • A VDA might stop accepting connections. After enabling the “Legacy graphics mode” policy, the VDA starts accepting connections again.

    [#LC3749]

  • When launching VM hosted apps, the Windows logon screen might appear before the app is fully launched. This fix introduces a 15-second grace period before the Welcome screen appears. It also provides support for the following registry key that allows you to customize the duration of the grace period.

    Note: During the grace period, there is no obvious indication to users that the app is launching. Configuring too high a grace period can delay application launches and cause users to inadvertently launch apps multiple times.

    To change the duration of the grace period, set the following registry key:

    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Citrix\wfshell\TWI Name: LogonUIHideTimeout Type: DWORD Value: Any value greater than zero in milliseconds (for example, 20000 milliseconds for 20 seconds)

    [#LC3828]

  • Attempts to use the attrib command to change file attributes of files on mapped client drives might fail.

    [#LC3958]

  • The Output Session Bandwidth Performance Monitoring counter might report inconsistent values upon recording for a long period of time.

    [#LC4151]

  • If you are logging on to a Version 7.6.300 VDA with explicit credentials (username/password) and User Account Control (UAC) enabled, and then attempt to authenticate to an application running in the session using a smart card, the following error message might appear:

    “An authentication error has occurred. No credentials are available in the security package.”

    [#LC4486]

Session/Connection

  • When multiple webcams or video capturing devices are installed on an endpoint, only one of the devices is mapped into the client session. Additionally, the device is mapped as Citrix HDX Web Camera, leaving no obvious clue as to which of the devices is mapped.

    [#LC1919]

  • In sessions for which you enable Local App Access, the screensaver fails to get activated.

    [#LC3182]

  • The Citrix policy “View window contents while dragging” does not work correctly.

    [#LC3552]

  • Disconnected sessions might remain open on a physical machine even after the time specified under “Disconnect session timer interval” has passed.

    To enable the fix, set the following registry keys:

    HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\Portica Name: ForceDisableRemotePC Type: DWORD Value: Any value greater than zero

    [#LC3650]

  • If an endpoint loses network connectivity for several minutes, reconnection attempts can fail until the VDA is restarted.

    [#LC3700]

  • When logging on to a VDA after it is in an idle state for an extended period of time, the credentials might not be passed through automatically to the logon screen upon reconnection and a prompt to enter the password appears on the logon screen.

    [#LC3720]

  • The WFICA32.exe process might keep a file locked even after the file was closed by the associated published application. As a result, the file cannot be edited for a while.

    [#LC3724]

  • Certain third-party published applications might fail to start on XenApp servers. As a result, the wfshell.exe process might close unexpectedly. When this error occurs, no indication that the session is starting or error messages appear on the user device.

    [#LC3766]

  • After undocking the Thomson Reuters Eikon toolbar in a multiple monitor session, the space occupied by the toolbar is not reclaimed by the session.

    In monitor configurations where the primary monitor is not located in the top left corner of the array, you must also install Fix #LC1599, which is included in Receiver for Windows 4.4 and later.

    [#LC3773]

  • When the App-V configuration setting “EnablePublishingRefreshUI” is enabled on the session host and “Session Lingering” is enabled as well, attempts to close an application on an iOS device can result in a black window that stays on the device screen.

    [#LC3800]

  • With the Citrix Windows XP Display Driver Model (XPDM) display driver enabled, the mouse shadow setting is always enabled even though it is disabled in the Control Panel.

    [#LC3806]

  • With Excelhook enabled, minimizing and then restoring an Excel workbook can cause the Excel window to lose focus.

    [#LC3873]

  • The “Restrict session clipboard write” and “Restrict client clipboard write” policies do not work properly for sessions using Citrix Receiver for Android. As a result, users can copy and paste content between the session and the user device regardless of the configuration of those two policies.

    [#LC3894]

  • When you attempt to reconnect to a disconnected session, a Windows lock screen appears with a set of keys but without an option to enter your password. When you click “Other credentials,” a second credentials icon appears that allows you to enter the password and unlock the session.

    [#LC4053]

  • If you power off or force a remote PC to restart while in an ICA session, all audio drivers might be disabled when the remote PC restart completes.

    [#LC4071]

  • If you add a file to a user device folder while the associated published application is running and then try to open the file from within the application, the file might not appear in the application’s Open File Dialog - even after clicking the refresh button.

    [#LC4073]

  • The VDA might become unresponsive at the “Welcome” screen due to a deadlock on picadm.sys.

    [#LC4195]

  • With Generic USB Redirection enabled, each time a generic redirected USB device is physically disconnected and reconnected within a session, it is treated as a new device. As a result, each time you reconnect such a USB device, an additional GUID is created for it.

    [#LC4259]

  • TLS connections between Citrix Receiver for Chrome and VDAs fail if all three of the following conditions are met:

    • Fix #LC2179 (Hotfix ICAWS760WX64032 or its replacement) is installed on the VDA
    • The connection is configured to use SSL
    • The Citrix Gateway Protocol (CGP) is disabled

    [#LC4405]

  • After installing Hotfix ICAWS760WX64032 and enabling SSL, attempts to reconnect to a VDA might fail intermittently. The issue occurs if the Citrix ICA Service exits unexpectedly or becomes unresponsive as a result of an SSL Listener failure.

    [#LC4438]

  • Sessions running on Version 7.6.300 of the VDA for Desktop OS with RES Workspace Manager installed can become unresponsive when roaming sessions between user devices.

    [#LC4570]

Smart Cards

  • In Microsoft Internet Explorer, the user interface for smart card logons to certain websites can be intermittently unavailable.

    [#LC3988]

System Exceptions

  • On logon or changing display resolution, the Ctxgfx.exe process may enter a deadlock causing the Session to hang.

    [#LC2410]

  • The operating system experiences an error on picadm.sys and a blue screen appears with stop code 0x20.

    [#LC3473]

  • The operating system experiences an error on picadm.sys and a blue screen appears with stop code 0x00000050.

    [#LC3921]

  • The operating system experiences an error on ctxad.sys and a blue screen appears with bugcheck code 0xD1.

    [#LC4007]

  • After upgrading a VDA for Desktop or Server OS to Version 7.6.300, the Citrix Print Manager Service (CpSvc.exe) can exit unexpectedly upon logoff.

    [#LC4102]

  • The operating system experiences an error on picadm.sys and a blue screen appears with stop code 0x000000C1.

    [#LC4334]

  • When you repeatedly play an .avi file on Windows Media Player, the memory consumption of the wfica32.exe process might continue to increase until the process exits unexpectedly.

    [#LC4335]

  • VDAs can experience a fatal exception on picadd.sys, displaying a blue screen, upon logoff from a Citrix Receiver session.

    [#LC4360]

  • VDAs can experience a fatal exception with bugcheck code 0x00000044 on ctxdvcs.sys and a blue screen appears.

    [#LC4505]

  • If the registry key HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\ICA\Thinwire\DisableOssForProcesses is defined, attempts to restart the VDA and launch a published desktop can result in a blue screen.

    [#LC4597]

VDA for Server OS

   
Content Redirection Server/Site Administration
HDX MediaStream Windows Media Redirection Session/Connection
Keyboard Smart Cards
Printing System Exceptions
Seamless Windows User Experience

Content Redirection

  • Server to client content redirection fails for VDAs other than those running on Windows Server 2008 R2. As a result, when you click a URL in a VDA session, the link opens in a browser running in the session rather than in a local browser.

    [#LC2221]

  • With content redirection enabled for Mailto links, Mailto links that contain commas fail to launch and the following error message appears:

    “Could not perform this operation because the default mail client is not properly installed.”

    The issue does not occur in console or Remote Desktop sessions.

    [#LC3701]

HDX MediaStream Windows Media Redirection

  • In Receiver sessions, seeking forward in Windows Media Player while playing .MOD, ac3, and mpeg files might cause the video to play without audio.

    [#LC2768]

  • If you play an .avi file with Windows Media Player within an ICA session (or published desktop session) and then start playing another .avi file without stopping the first one, the video frames might not be properly directed to the user device. As a result, the CPU usage of the mmvdhost.exe process can be higher than normal and the video might not render properly on the user device.

    [#LC4260]

Keyboard

  • If you are in a Citrix GoToMeeting running inside a VDA session and are made presenter, your mouse pointer might start to flicker. This occurs when the “Legacy graphics mode” policy setting is disabled for the session.

    [#LC3033]

Printing

  • The Citrix Print Spooler Service might exit unexpectedly.

    [#LC4180]

Seamless Windows

  • Seamless applications can become unresponsive and their icon in the Windows taskbar reverts to the generic Citrix Receiver icon.

    [#LC3783]

  • When you close a seamless published application, the focus goes to another published application rather than honoring windows in the typical Windows Z-order.

    [#LC4009]

Server/Site Administration

  • When launching VM hosted apps, the Windows logon screen might appear before the app is fully launched. This fix introduces a 15-second grace period before the Welcome screen appears. It also provides support for the following registry key that allows you to customize the duration of the grace period.

    Note: During the grace period, there is no obvious indication to users that the app is launching. Configuring too high a grace period can delay application launches and cause users to inadvertently launch apps multiple times.

    To change the duration of the grace period, set the following registry key:

    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Citrix\wfshell\TWI Name: LogonUIHideTimeout Type: DWORD Value: Any value greater than zero in milliseconds (for example, 20000 milliseconds for 20 seconds)

    [#LC3828]

  • Attempts to use the attrib command to change file attributes of files on mapped client drives might fail.

    [#LC3958]

  • Multiple, concurrent attempts to establish a Remote Desktop (RDP) connection to a VDA from separate user devices can cause the VDA to unregister.

    [#LC4014]

  • The Output Session Bandwidth Performance Monitoring counter might report inconsistent values upon recording for a long period of time.

    [#LC4151]

  • When a VDA for Server OS is unregistered or the Citrix Desktop Service is disabled, even domain administrators cannot log on to that VDA through a Remote Desktop (RDP) connection. While that behavior is as designed for non-administrator roles, administrators are expected to be able to log on.

    [#LC4290]

  • If you are logging on to a Version 7.6.300 VDA with explicit credentials (username/password) and User Account Control (UAC) enabled, and then attempt to authenticate to an application running in the session using a smart card, the following error message might appear:

    “An authentication error has occurred. No credentials are available in the security package.”

    [#LC4486]

  • Live scrolling (the synced state of page scrolling and scrollbar motion) does not work in Excel spreadsheets. Version 7.6.300 of the VDA introduced Fix #LC2965, intended to address the issue. However, Fix #LC2965 does not fully resolve the issue in all cases. This Fix, #LC4579, ensures that the issue is corrected even on systems where Fix #LC2965 does not work.

    From the description of #LC2965:

    Live scrolling (the synced state of page scrolling and scrollbar motion) does not work in Excel spreadsheets. The issue occurs because the key and value in registry location HKEY_CURRENT_USER\Control Panel\Desktop\UserPreferencesMask on the VDA are overwritten by the wfshell.exe process each time a user logs on to the VDA. To prevent this, create the following registry key on the VDA and set the value to 1:

    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Citrix Name: EnableVisualEffect Type: REG_DWORD Value: 1

    [#LC4579]

  • After installing Hotfix ICATS760WX64022 (or its replacements), any new custom registry configuration under the registry key HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\Graphics\ might not be retained when you restart the system.

    [#LC4931]

Session/Connection

  • The Source Network Address displays an incorrect IP address for remote user devices in the server’s Windows Security Log with EVENT ID 4624.

    [#LC1352]

  • With the Client audio redirection or Windows Media Redirection policies disabled, the Volume control (Speaker) icon in the notification area of a published desktop session can display an incorrect audio state.

    [#LC2538]

  • In Citrix Receiver for Android published desktop sessions, attempts to open a Microsoft Outlook calendar invitation can fail with the following error message:

    “Cannot open item”

    The issue occurs with calendar invitation created by other users; invitations created by the same user are not affected.

    [#LC2828]

  • In certain scenarios, the Client Printer Redirection and Citrix Group Policies’ Access Control filters might fail to work while logging on or reconnecting to a disconnected session.

    [#LC3083]

  • In sessions for which you enable Local App Access, the screensaver fails to get activated.

    [#LC3182]

  • The WFICA32.exe process might keep a file locked even after the file was closed by the associated published application. As a result, the file cannot be edited for a while.

    [#LC3724]

  • Certain third-party published applications might fail to start on XenApp servers. As a result, the wfshell.exe process might close unexpectedly. When this error occurs, no indication that the session is starting or error messages appear on the user device.

    [#LC3766]

  • After undocking the Thomson Reuters Eikon toolbar in a multiple monitor session, the space occupied by the toolbar is not reclaimed by the session.

    In monitor configurations where the primary monitor is not located in the top left corner of the array, you must also install Fix #LC1599, which is included in Receiver for Windows 4.4 and later.

    [#LC3773]

  • When the App-V configuration setting “EnablePublishingRefreshUI” is enabled on the session host and “Session Lingering” is enabled as well, attempts to close an application on an iOS device can result in a black window that stays on the device screen.

    [#LC3800]

  • The Service Host (svchost.exe) process that is registered with Terminal Services (TermService) might close unexpectedly on RPM.dll while connecting to a server through an RDP session.

    [#LC3808]

  • With Excelhook enabled, minimizing and then restoring an Excel workbook can cause the Excel window to lose focus.

    [#LC3873]

  • Even with the Client audio redirection policy enabled, audio (.wav) files can fail to play. The issue occurs in sessions where the session ID is reused and the Client audio redirection policy was disabled for the previous session.

    [#LC3882]

  • The “Restrict session clipboard write” and “Restrict client clipboard write” policies do not work properly for sessions using Citrix Receiver for Android. As a result, users can copy and paste content between the session and the user device regardless of the configuration of those two policies.

    [#LC3894]

  • When a connection to a Windows Server 2008 R2 VDA fails due to a license error, the error message “You cannot access this session because no licenses are available” fails to appear.

    [#LC4026]

  • If you add a file to a user device folder while the associated published application is running and then try to open the file from within the application, the file might not appear in the application’s Open File Dialog - even after clicking the refresh button.

    [#LC4073]

  • After logging off of a newly installed Feature Pack 3 VDA for Server OS (7.6.300), Citrix Studio might display that VDA’s status as “initializing” rather than “registered.” During that time, no new sessions will be brokered for that VDA.

    [#LC4188]

  • The VDA might become unresponsive at the “Welcome” screen due to a deadlock on picadm.sys.

    [#LC4195]

  • With Generic USB Redirection enabled, each time a generic redirected USB device is physically disconnected and reconnected within a session, it is treated as a new device. As a result, each time you reconnect such a USB device, an additional GUID is created for it.

    [#LC4259]

  • COM port mapping can intermittently fail.

    [#LC4267]

  • With Application Prelaunch enabled, a black window might appear temporarily on the user device. The issue can occur when you start Citrix Receiver without launching an application.

    [#LC4280]

  • The Citrix policy “View window contents while dragging” does not work correctly on published desktops. When you log on to a VDA, windows content is displayed correctly. However, after you reconnect to a disconnected session, the windows content is no longer displayed.

    [#LC4301]

  • TLS connections between Citrix Receiver for Chrome and VDAs fail if all three of the following conditions are met:

    • Fix #LC2179 (Hotfix ICATS760WX64032 or its replacement) is installed on the VDA
    • The connection is configured to use SSL
    • The Citrix Gateway Protocol (CGP) is disabled
       

    [#LC4405]

  • When launching an application in a VDA 7.6.300 session, progress bar with the following message might appear for several minutes before the application launches: “Please wait for Local Session Manager.” In the meantime, the application appears to be unresponsive even though it is launching correctly.

    [#LC4406]

  • Certain applications in a user session might default to an incorrect input method. You can correct that behavior by clearing the “Let me set a different input method for each app window” check box in various Control Panels. However, the setting revert to the incorrect defaults when you reconnect to the session.

    To keep the settings from reverting, set the following registry key:

    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Citrix Name: EnableLocalInputSetting Type: DWORD Data: 1 (you can change the input method setting)

    [#LC4416]

  • When connecting through the NetScaler Gateway, the SmartAccess Control filters might not be applied correctly.

    [#LC4503]

  • The presence of non-ASCII characters in a published application path prevents the application from launching.

    [#LC4595]

  • With the “Auto Client Reconnect” policy enabled, attempts to reconnect to a session can fail intermittently and cause the VDA to reregister. The following warning message appears:

    “Event 1048, Citrix Desktop Service (Warning)

    The Citrix Desktop Service is re-registering with the DDC: “NotificationManager:NotificationServiceThread: WCF failure or rejection by broker (<DDC: DDC NAME>)””

    [#LC4767]

Smart Cards

  • In Microsoft Internet Explorer, the user interface for smart card logons to certain websites can be intermittently unavailable.

    [#LC3988]

System Exceptions

  • The operating system experiences an error on picadm.sys and a blue screen appears with stop code 0x20.

    [#LC3473]

  • The operating system experiences an error on picadm.sys and a blue screen appears with stop code 0x00000050.

    [#LC3921]

  • After upgrading a VDA for Desktop or Server OS to Version 7.6.300, the Citrix Print Manager Service (CpSvc.exe) can exit unexpectedly upon logoff.

    [#LC4102]

  • The Service Host (svchost.exe) process that is registered with Terminal Services (TermService) might exit unexpectedly.

    [#LC4150]

  • The operating system experiences an error on picadm.sys and a blue screen appears with stop code 0x000000C1.

    [#LC4334]

  • When you repeatedly play an .avi file on Windows Media Player, the memory consumption of the wfica32.exe process might continue to increase until the process exits unexpectedly.

    [#LC4335]

  • VDAs can experience a fatal exception on picadd.sys, displaying a blue screen, upon logoff from a Citrix Receiver session.

    [#LC4360]

  • VDAs can experience a fatal exception with bugcheck code 0x00000044 on ctxdvcs.sys and a blue screen appears.

    [#LC4505]

  • If the registry key HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\ICA\Thinwire\DisableOssForProcesses is defined, attempts to restart the VDA and launch a published desktop can result in a blue screen.

    [#LC4597]

User Experience

  • When attempting to move a Microsoft Excel window within a seamless, dual-monitor session, the window might experience a delay while redrawing in the new location.

    [#LC4441]

Virtual Desktop Components - Other

  • The operating system experiences an error on picadm.sys and a blue screen appears with stop code 0x20.

    [#LC3473]

  • The operating system experiences an error on picadm.sys and a blue screen appears with stop code 0x00000050.

    [#LC3921]

  • After upgrading a VDA for Desktop or Server OS to Version 7.6.300, the Citrix Print Manager Service (CpSvc.exe) can exit unexpectedly upon logoff.

    [#LC4102]

  • The Service Host (svchost.exe) process that is registered with Terminal Services (TermService) might exit unexpectedly.

    [#LC4150]

  • The operating system experiences an error on picadm.sys and a blue screen appears with stop code 0x000000C1.

    [#LC4334]

  • When you repeatedly play an .avi file on Windows Media Player, the memory consumption of the wfica32.exe process might continue to increase until the process exits unexpectedly.

    [#LC4335]

  • VDAs can experience a fatal exception on picadd.sys, displaying a blue screen, upon logoff from a Citrix Receiver session.

    [#LC4360]

  • VDAs can experience a fatal exception with bugcheck code 0x00000044 on ctxdvcs.sys and a blue screen appears.

    [#LC4505]

  • If the registry key HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\ICA\Thinwire\DisableOssForProcesses is defined, attempts to restart the VDA and launch a published desktop can result in a blue screen.

    [#LC4597]

Issues fixed since XenApp and XenDesktop 7.6

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