The MsiNetAssemblySupport property indicates whether the computer supports common language run-time assemblies. On systems that support common language run-time assemblies, the installer sets the value of MsiNetAssemblySupport to the file version of Fusion.dll. The installer does not set this property if the operating system does not support common language run-time assemblies. When multiple versions of Fusion.dll are installed side-by-side on the user's computer, this property is set to the latest version of the Fusion.dll file. For example, if .NET Framework version 1.0.3705 (Fusion.dll version 1.0.3705.15)and .NET Framework version 1.1.4322 (Fusion.dll version 1.1.4322.314) are installed side-by-side, the MsiNetAssemblySupport property is set to 1.1.4322.314. For more information, see Assemblies.
||Windows Installer 5.0 on Windows Server 2012, Windows 8, Windows Server 2008 R2 or Windows 7. Windows Installer 4.0 or Windows Installer 4.5 on Windows Server 2008 or Windows Vista. Windows Installer on Windows Server 2003 or Windows XP. See the Windows Installer Run-Time Requirements for information about the minimum Windows service pack that is required by a Windows Installer version.