I want to create a class library project with Target Framework .NET Standard 2.0.
I\'ve updated my Visual Studio 2017 to Version 15.3 and
This worked for me
On the tab "Workloads" check ".Net Core cross-platform development" and click on "Modify"
Don't forget to check ".NET Core 2.0 development tools" on the left menu.
Source
I installed the Asp Net Core before, however not appeared on my Visual Studio, just after I installed using the installation of Visual Studio appeared for me.