: Developers can target older frameworks using newer versions of Visual Studio. Key Benefits for Developers
For the .NET Framework 4 Multi-Targeting Pack (especially the 4.0.3 version), specific system requirements were defined: microsoft .net framework 4 multi targeting pack
The modern ImplicitUsings feature (introduced in .NET 6) is not supported for .NET Framework 4.0 targets. Explicitly add your using statements. : Developers can target older frameworks using newer