The project was restored using Microsoft.NETCore.App version 2.1.0, but with current settings, version 2.1.0-rtm-26515-03 would be used instead

Question

at the moment I have a microservice made in c # with web api and net core 2.0

in the nutget packages I have already found a version 2.1 of net core and I have decide

Answer 1

As @Leo Liu-MSFT mentioed, I had to set the RuntimeFrameworkVersion and RuntimeIdentifier in .csproj file:

 
   2.1.1
   AnyCPU
   win-x64
 

But then importantly, I had to restore packages for the solution.