Microsoft Windows Installer Installation Pack .msi File Extension

Developer:
Microsoft
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What are msi files & how to open them - Microsoft Windows Installer Installation Pack

Developer:
Microsoft

The MSI file format is used to store installation information for a specific installer. It can be used by the installer on the Windows Operating System, and can also be used by a number of third-party installers.
The file is compressed and may be decompressed using a program such as 7-ZIP.