App-V 4.6 Release Notes

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Read these Release Notes thoroughly before you install the Microsoft Application Virtualization (App-V) Management System. These Release Notes contain information that you need to successfully install Application Virtualization (App-V) 4.6. This document contains information that is not available in the product documentation. If there is a discrepancy between these Release Notes and other App-V documentation, the latest change should be considered authoritative.

Protect Against Security Vulnerabilities and Viruses

To help protect against security vulnerabilities and viruses, it is important to install the latest available security updates for any new software being installed. For more information, see the Microsoft Security Web site (

Known Issues with Application Virtualization 4.6

This section provides the most up-to-date information about issues with Microsoft Application Virtualization (App-V) 4.6. These issues do not appear in the product documentation and in some cases might contradict existing product documentation. Whenever possible, these issues will be addressed in later releases.

Load/install error running a Windows Installer file generated by the App-V 4.5 Sequencer

Running a Windows Installer file generated by the App-V 4.5 Sequencer produces a load/install error when trying to run it on an App-V 4.6 client. You will see the following message: "This package requires Microsoft Application Virtualization Client 4.5 or later". Please use the following workaround.

WORKAROUND Open the old package with either the App-V 4.5 SP1 Sequencer or the App-V 4.6 Sequencer and generate a new .msi file for the package.

Alternatively, at the command prompt, the App-V Sequencer can generate the new .msi file by using the /OPEN and /MSI parameters, for example, SFTSequencer /Open:”package.sprj” /MSI. For more information, see How to Upgrade a Virtual Application by Using the Command Line.

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