To extract the contents of a Microsoft Software Installer (MSI) file you need to run the following command against the MSI that you are working with:

msiexec /a <FullPathToMSISourceFile> /qb TARGETDIR=<FullPathToExtractedContentFolder>

So a working example of this would be as follows:

msiexec /a "C:\Temp\Nutanix-VirtIO-1.2.3-x64.msi" /qb TARGETDIR="C:\Temp\Extract"

/ JC