.IWZ File Extension
File TypeInstallShield Express 2 Project File
What is an IWZ file?
Project file created by InstallShield Express 2.x, a program that allows users to create InstallScript-based installation packages; stores project information, including settings, InstallScript code, file names, dialog images and text.
IWZ files store the necessary information to assemble an installation package. They are used in older Express versions of InstallShield.