The following is the necessary requirement to build .Net Core apps
Optional: by default .Net Core generator runs web applications in the Kestrel web server which is included in .net core SDK. In order to run the application with IIS working as a reverse proxy in front of Kestrel (*) install:
(*) To configure the .Net Core App for IIS set the generator property Web Server = Internet Information Server.
This article is valid for GeneXus 16 upgrade 8 or higher. For prior versions refere to .Net Core Generator Requirements (GeneXus 16 Upgrade 7 or prior)