File Type Generic IconWindows Installer Package
File Format Proprietary (Microsoft)
Usage Runs when opened
Popularity ★ ★ ★ ★ ★  Popular

An MSI file is an installer package that contains the instructions and data required to install a Windows application. The files within the package can be extracted and installed using Microsoft Windows Installer.

Info About Microsoft Windows Installer

Windows Installer is a utility included with the Windows operating system for installing applications. It extracts files from installer packages and copies them to the locations defined by the installer. The program can be used to install Microsoft software as well as third-party applications. Windows Installer can also be used to remove software that has been previously installed.

Open With

IconMicrosoft Windows Installer


Updated April 22, 2010
Information from the PC File Extensions Reference