Project file is incomplete. Expected imports are missing

Question

After format my computer I reinstalled Vs 2017 V 15.6.3 and install ASP.Net Core SDK from Microsoft 2.1.4

But when I create new asp core application VS failed with e

Answer 1

in my case, I went to the folder C:\Program Files\dotnet\sdk delete the preview sdk folder, then on the command line run:

dotnet sdk 2.1.200

to set the correct sdk version for asp.net core. this fixed the problem.