The minimum version of the operating system that the package requires.
<OSMinVersion> A version string in duo notation (major.minor) or trio notation (major.minor.appversion). </OSMinVersion>
Declares the minimum operating system and software requirements that must exist for the package to be applicable to the system.
The system blocks install or update of an app on a computer if the value of OSMinVersion specified in the package manifest is greater than the version of the operating system.
In the version string, major.minor.appversion, the first two fields represent the operating system version. The third field is optional and defaults to the app version of the operating system.