RES 2011 App-V Integration Wasted Opportunity

During an update of an App-V package I discovered a bug in RES Workspace Manager. I will first summarize the software and versions which are used for the deployment. Then I will explain the issue I encountered.


Operating System: Windows 7
Virtualazation Client: Microsoft App-V
Workspace Manager: RES Workspace Manager 2011 SR2 with Fix Pack 5 (
And also tested with
Workspace Manager: RES Workspace Manager 2011 SR4 with Fix Pack 6 (

Deployment: Microsoft Configuration Manager 2007 R2

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Differencing Disk on Windows 7

I was searching for a quick way to restore to a default installation. After a search I found “Differencing Disk”. Here is some information about differencing disk from Microsoft TechNet.

A differencing disk is a virtual hard disk you use to isolate changes to a virtual hard disk or the guest operating system by storing them in a separate file. A differencing disk is similar to the Undo Disks feature because both offer a way to isolate changes in case you want to reverse them. However, Undo Disks is associated with a virtual machine and all disks assigned to it, while a differencing disk is associated only with one disk. In addition, Undo Disks is intended to be a shorter-term method of isolating changes.

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