If you are preparing an installation for a multilingual application and Windows Installer 4.0 will be running the installation, specify the full path to the language-neutral file that contains the multilingual user interface (MUI) manifest. This enables you to separate language-neutral portable executable files from .mui files, which contain all of the language-dependent resources, and later add resources for additional languages without having to recompile or relink the application.

If this setting contains a value, the value for the Description setting is ignored. If you leave this setting blank, Windows Installer uses the value for the Description setting.

If you enter a value in the Description Resource DLL, you must also enter a value for the Description Resource ID setting.

This setting applies to installations that are run with Windows Installer 4.0 on Windows Vista systems. Earlier versions of Windows Installer ignore this setting.