Install via Winget
winget install Microsoft.AppInstallerFileBuilder
Open Windows Terminal or PowerShell and run the command above. Winget is built into Windows 10 (1809+) and Windows 11.
About AppInstaller File Builder
AppInstaller File Builder is a Windows 10 application from Microsoft that provides a graphical interface for creating .appinstaller files used to distribute MSIX packages. AppInstaller files allow sideloaded Windows apps to be automatically updated from a specified location. This tool is part of the MSIX Toolkit and simplifies the creation of these XML-based configuration files, making it easier to set up enterprise app distribution without using the Microsoft Store.