[This is preliminary documentation and subject to change.]
The ARPNOMODIFY property disables Add/Remove Control Panel and Programs Wizard functionality that would modify the product. If the property is set, RegisterProduct action writes the value for do not modify under the Uninstall key and prevents the UninstallString from being written to the registry.
The ARPNOMODIFY property is set in the Property table by authoring directly or through the use of a transform.
None.
For example, this property can be set during a customization transform to prevent users from changing an administrator customization.