MSI Properties
(Variables for the Windows Installer)

Properties function as variables for the Windows Installer during installation. Properties can be used to transfer specific properties for installation, or unwanted properties can be "disabled". Properties can be changed using transforms.

Public properties
The values of public properties can by changed by the administrator – either using a transform or as a Windows Installer parameter (e.g. in the MSIInstallProduct command).

User-defined public properties
You can add new public properties to an MSI-based software using a transform. This enables you, for example, to execute the MSI-based software in different ways, depending on the variable values.

Private Properties
Private properties are only used internally for the MSI-based software. They cannot be changed or added to.

See also:
MSI Repackaging: Overview