Programs & apps · .msi
What Is an MSI File?
A .msi file is a Windows software installer package.
- Extension
- .msi
- Full name
- Windows Installer package
- Type
- Program
- MIME type
- application/x-msi
- Developed by
- Microsoft
Free MSI Tools
These run in your browser. Your MSI files are never uploaded.
About MSI Files
MSI files install software using Windows Installer. Unlike a custom EXE installer, an MSI follows a standard format, so IT departments can install, repair and remove programs silently across many computers. Double-clicking runs the installer. Like EXE files, MSIs run with your permissions, so only install packages from trusted sources.
How to Open an MSI File
- Windows
- Double-click to install. Admins can run msiexec /i file.msi /quiet.
- Mac & Linux
- MSI packages don't install there; 7-Zip or msitools can list the files inside.
MSI File Questions
What's the difference between MSI and EXE installers?
MSI uses the standard Windows Installer, which makes silent installs and repairs easier. An EXE installer can be anything, sometimes a wrapper around an MSI.
How do I uninstall an MSI program?
Use Settings, Apps, or run msiexec /x file.msi.