Product Documentation

What's new

Oct 31, 2017

About this release

The XenApp and XenDesktop 7.15 Long Term Service Release (LTSR) includes new versions of the Windows VDAs and new versions of several XenApp and XenDesktop core components. You can:

  • Install or upgrade a XenApp or XenDesktop Site

Use the ISO for this release to install or upgrade all the core components and Virtual Delivery Agents. Installing or upgrading to the latest version allows you to use all the latest features.

  • Install or upgrade VDAs in an existing Site

If you have a XenApp or XenDesktop deployment, and aren't ready to upgrade your core components, you can still use several of the latest HDX features by installing (or upgrading to) a new VDA. Upgrading only the VDAs is often helpful when you want to test enhancements in a non-production environment. 

For instructions, see Prepare to install or Upgrade a deployment.

The XenApp and XenDesktop download pages for this release also include updated versions of the following software. For more information on the features and installation instructions, see the component's documentation.



Citrix SCOM Management Pack for XenApp and XenDesktop

XenApp and XenDesktop 7.15 LTSR

The product release includes the following new, modified, and enhanced features since XenApp and XenDesktop 7.14.1.

VDA installation on machines without Microsoft Media Foundation

Most supported Windows editions come with Microsoft Media Foundation already installed. If the machine on which you're installing a VDA does not have Media Foundation (such as N editions), several multimedia features will not be installed and will not work. You can acknowledge the limitation, or end the VDA installation and restart it later, after installing Media Foundation. In the graphical interface, this choice is offered in a message. In the command line, you can use the /no_mediafoundation_ack option to acknowledge the limitation.

Upgrading a XenApp 6.5 worker to a new VDA

After migrating a XenApp 6.5 farm, you can upgrade a XenApp 6.5 worker to a new VDA. Previously, running the XenApp and XenDesktop installer on the worker server automatically removed the XenApp 6.5 software and then installed the new VDA. Now, you first remove HRP7 and the XenApp 6.5 software from the server., using separate processes. Then, you install the new VDA. For details, see Upgrade a XenApp 6.5 worker to a new VDA.

MCS supports generation 2 VMs

When using Microsoft System Center Virtual Machine Manager to provide VMs, you can now use Machine Creation Services (MCS) to provision generation 2 VMs. 

Local Host Cache

During a new installation of XenApp and XenDesktop, Local Host Cache is enabled by default. Connection leasing is disabled by default.

After an upgrade, the Local Host Cache setting is unchanged. For example, if Local Host Cache was enabled in the earlier version, it remains enabled in the upgraded version. If Local Host Cache was disabled (or not supported) in the earlier version, it remains disabled in the upgraded version.


Application Failure monitoring. Director extends the Trends view with the Application Failures tab to display historical failures associated with published applications. You can see faults and errors that have occurred while launching or running of a selected application or process during a selected time period. This information enables you to comprehend and troubleshoot application-specific issues. For more information, see Historical application failure monitoring in Troubleshoot applications.

By default, failures of applications hosted on Server OS VDAs are monitored. You can modify the monitoring settings through the Monitoring Group Policies: Enable monitoring of application failures, Enable monitoring of application failures on Desktop OS VDAs, and List of applications excluded from failure monitoring. For more information, see Policies for application failure monitoring in Monitoring policy settings.

This feature requires Delivery Controller(s) and VDAs version 7.15 or later. Desktop OS VDAs of Windows Vista or later, and Server OS VDAs of Windows Server 2008 or later are supported.

Virtual Delivery Agents (VDAs) 7.15

After upgrading your VDAs from version 7.9, 7.11, 7.12, 7.13, or 7.14 you do not need to update the machine catalog's functional level. The default (7.9 (or newer ...)) remains the current functional level. For information, see VDA versions and functional levels.

Citrix Licensing 11.14

Citrix Licensing 11.14 contains new features and fixed and known issues.

Session Recording 7.15 LTSR

Load balancing for Session Recording: This experimental feature present in XenApp and XenDesktop 7.14 is not included in this release.