Microsoft .NET Framework 4
Mobile App Service is being deprecated. Please use API as a backend for the Mobile App instead.
The presence of Microsoft .NET Framework 4 is checked automatically, along with other prerequisites, when you click Install
The redistributable package for .NET Framework 4 is shipped with Alloy Navigator Express 8 and available from the Installer when checking prerequisites.
INFO: For details, see Microsoft .NET Framework 4.8.