What’s new in App Layering 1905

This release includes the following features and improvements.

  • Support for:

    • The following Citrix updates:
      • Citrix Hypervisor version 8.0
      • Citrix Virtual Apps and Desktops version 7 1903
      • Citrix Virtual Apps and Desktops version 7.15 LTSR CU4
      • Citrix Provisioning version 1903
      • Citrix Provisioning version 7.15 LTSR CU4
    • Windows Server 2019 as an OS Layer.

    • Microsoft Office 2019 requires that you upgrade the App Layering machine tools. See this recipe for details.

    • Support for secure connections on the appliance, using TLS 1.2, when sending email via SMTP.
  • Hyper-V connector improvements:

    • The connector now uses BITS server to copy files to and from the appliance.
    • During file copies, progress reporting now includes the percent complete, rather than just elapsed time.
    • A CIFS file share is no longer required on the Hyper-V server. (UNI-72849)

Labs features in this release

Labs features are previews of potential functionality for future releases. While a feature is in Labs, you should not use it in production. There is no guarantee that Labs feature will remain in the product, nor that the feature will work as originally designed if and when they are released.

The Labs features available in this release include the following:

  • App layers can be assigned as Elastic layers on layered images that use a different OS layer: Until now, Elastic layer assignments required that the App layer assigned use the same OS layer that was used to create the App layer. Now you can try assigning an App layer as an Elastic layer on a layered image that uses a different OS layer.


    There is no guarantee that an App layer will work on a different OS layer than the one used to create it. If there are issues, you can disable this feature and allow the App layer to be used only with the OS that you used to create the layer.

To use a Labs feature, you need to enable the feature first.

Supported platforms

For information about platforms supported by Citrix App Layering, see System requirements.

Upgrade path

You can upgrade from any previous Citrix App Layering 4.x version to the current release.