MSI stand for Microsoft Installer, although now its more commonly knows as Windows Installer. Its a Program that is ofCourse developed by Micrsoft. Which is used for installing, updating, removing and repairing exe files.

This file format belongs to Installer Packages category

MSI File is automatically opened by Microsft Windows Installer

MSI file extension is design and developed by Microsoft

application/x-ole-storage, text/mspg-legacyinfo

D0 CF 11 E0 A1 B1 1A E1

Micrsoft Windows can automatically open the MSI file extension.