Error 25120 when installing Application Virtualization 4.6

During the installation of Microsoft’s Application Virtualization, I encountered the following error 25120.

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This was due to a slight oversight on my part during the installation of IIS on the Server 2008 R2 system that I was installing App-V on. The resolution was to return to Server Manager and in the Roles node, add in the IIS Management Tools (complete) on the App-V server and then restart the App-V Management server installation.

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