FOLDER_DOTNET_40

InstallShield 2022 » InstallScript Language Reference

The FOLDER_DOTNET_40 system variable stores the fully qualified path of the folder where the Microsoft .NET Framework 4.0 redistributable files are located:

<WINDIR>\Microsoft.NET\Framework\v4.0.30319

This system variable is read-only. If you attempt to assign a value to it, a compiler error results.