.NET Core SDK
Visual Studio
You must be using Visual Studio 2019 version 16.4 or later to be able to develop and publish a COBOL application for use on .NET Core.
In addition, you must have installed a version of the .NET Core SDK. You can install .NET Core SDK 3.1 by installing Visual Studio's ".NET Core cross-platform development" component. If you do not have this component installed, you can install it from Visual Studio by clicking
.