Lessmsi 1.6.1


Lessmsi is a utility with a graphical user interface and a command line interface that can be used to view and extract the contents of an MSI file.

To use it, after downloading the zip file, double-click lessmsi-gui.exe to run the application.

You can also extract files from the command line. This has been used in automated scripts to extract files or information from an MSI. To extract from the command line:

lessmsi x <msiFileName> [<outouptDir>]


Additional Features

  • Windows Explorer Integration
    Lessmsi also integrates with Windows Explorer so that you can right-click on a Windows Installer file (.msi file) and select “Extract Files” to extract it into a folder right there.
    Just select Preferences from the Edit menu to enable (or disable) the explorer integration.
  • MSI Table Viewer
    Windows Installer files (.msi files) are based on an internal database of tables. lessmsi features a viewer for those tables. This is useful for people who work a lot with installers.



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