What is a MSI file
MSI files are known as files used by installers on the Windows operating system. They contain information about particular installations that help the installer to do its job. This information includes files that have to be installed as well as different locations needed for the installation. Windows updates can use MSI files, but third-party, non-Mircosoft software installers can make use of MSI files as well.
MSI files are not pure installation files, but rather installer package files. Thus, they can be extracted using 7-zip or other decompression methods and software. MSI files are prone to become infected. Instead of trusting a random or received MSI file, a thorough anti-virus scan is suggested.
Here's a small, but not exhaustive list of programs that can open MSI documents:
- Microsoft Windows Installer