The Microsoft® Windows® Installer is an application installation and configuration service. WindowsInstaller-KB884016-v2-x86.exe is the redistributable package for installing or upgrading Windows Installer. This revised package replaces the previously released redistributable package named "WindowsInstaller-KB884016-x86.exe" and adds the ability to install Windows Installer 3.0 on computers that are running the Windows 2000 Multilingual User Interface Pack (MUI).