Element Hierarchy (app installer file schema)

The following list summarizes the allowed hierarchies for the App Installer file schema, starting with the outermost element at the top.

• AppInstaller
  • MainBundle
  • MainPackage
  • OptionalPackages
    • Bundle
    • Package
  • RelatedPackages
    • Bundle
    • Package
  • Dependencies
    • Bundle
    • Package
  • UpdateSettings
    • OnLaunch
    • s4:AutomaticBackgroundTask
    • s4:ForceUpdateFromAnyVersion
  • s4:RepairUris
    • s4:RepairUri
  • s4:UpdateUris
    • s4:UpdateUri

Requirements

Requirement	Value
xmlns=http://schemas.microsoft.com/appx/appinstaller/2017/2	This namespace is required for features introduced in Windows 10, version 1803.
xmlns:s4=http://schemas.microsoft.com/appx/appinstaller/2021	This namespace is required for features introduced in Windows version 21H2 build 22000
Minimum OS version	Windows 10 version 1803 build 17134