Type: String
Returns the minimum version of Microsoft's Windows Installer technology installed on the visitor's machine, such as 0, 1.0, 1.1, 1.2, and 2.0. While it is not currently possible to detect the exact version installed, it can be very handy to know what the minimum installed version is.
Note: You must call the GetExtPropertiesEx method before checking the value of this property. This property requires the Enterprise Edition of BrowserHawk.