The DEBUG_REQUEST_GET_WIN32_MAJOR_MINOR_VERSIONS Request operation returns the version of Windows that is currently running on the target.
The major and minor version numbers for the version of Windows that is currently running on the target. The type of the version numbers is an array containing two ULONG values; the first ULONG in the array is the major version number and the second is the minor version number
The following table lists the major and minor version numbers by operating system.
Version of Windows Major version number Minor version number
Windows Server 2003