Microsoft .NET Framework 4.8 or later is required for System Platform 2023 R2. When
the System Platform installation process begins, it automatically checks the .NET
version and installs the correct version if needed.
The Application Object Toolkit (AOT) is not included in the System Platform 2023 R2
release, but if you use AOT to build objects for Application Server, check that you
have installed and configured the developer pack for .NET Framework 4.8 when you create
your AOT solution in Visual Studio.