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title: Setup Bootstrapper
---

# Setup Bootstrapper

The Keyman for Windows installation bootstrapper is a self-extracting executable file that contains a Windows Installer technology MSI file, and optionally keyboards. The bootstrapper is used whenever a package installer is created.

The bootstrapper:

1.  Checks the system before starting the installation to ensure that all prerequisites are met, and optionally downloads and installs the prerequisites.
2.  Optionally checks online for an updated version of Keyman for Windows before installing.
3.  Starts the Keyman for Windows Windows Installer MSI package.
4.  Installs any keyboards included.
5.  Starts Keyman for Windows after the install completes.

For command line parameters and more information see [Knowledge Base article KMKB0035](/kb/35)