File Extension MSI

  • Full name
    Microsoft Windows Installer Installation Package
  • Developer
  • Popularity
Have you encountered a problem with a MSI file? Don’t you know which program opens a file with this extension? You will find all the information you need about working with a MSI file here. In the further part of this page we have added a list of programs that should open your MSI file. It is enough you choose a proper application for your operating system, download and install it.


MSI files are Windows Installer Packages, which are Windows installation package or archive files used to install application on a Windows operating system. Windows Update also uses the MSI format.

In addition to the files to be installed, MSI files also contain information about where to install certain files (eg system files). The EULA or license agreement and / or their consent request are also included.

The MSI files, which of course can only be used under Windows, can usually be started by simply double-clicking. In some cases, however, a Setup.Exe file must be started, which in turn opens the MSI file. To run an MSI file you need the Windows Installer (formerly Microsoft Installer), which is part of the standard installation.

Especially on older Windows versions (Windows XP) it can happen that certain MSI files can not be started. This is usually because the Windows Installer is too old and you have to update to the latest version. Normally, this should work via Windows Update, but it happens that you have to install it manually.

There are also MSI files intended for the 64 bit variants of Windows. In an attempt to install you will usually get an error message.

If you are interested in the content of an MSI file, you can usually open it with 7-zip. To create an MSI file, which is particularly interesting for programmers who want to make their programs easier to distribute, there are numerous commercial as well as free programs.

Programs which can open a MSI file

How to open a MSI file? Advice and guidance

Absolutely most often appearing reason that prevents you from opening the MSI file is the lack of a proper application to support it in your operating system. It is notably the first thing you need to address. When one of the programs to support a MSI file from the list is already installed, you can try to rerun the file. The system should display a message asking you to choose a primary application to support MSI files. At this point we are looking for disk space where the application was installed in and we can link it with a MSI file. Since then, our operating system will use the selected program to support all MSI files.

Other issues

Despite the described problem with MSI there may be many more problems. If the existing operations were not effective, get involved with the following matters:

- verify that the MSI file is not damaged and that it has been downloaded or copied in whole
- verify that the file has a file extension that has not been intentionally changed (for example, if it do not contain other information than its extension suggests)
- make sure again whether the MSI file type is linked in the operating system with a proper program
- make sure that the file is not infected with a virus and you have up to date software and drivers.

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