.NET Core 2.0 missing from my Visual Studio

Please make sure you use Visual Studio 2017 Update 3 (version 15.3, 26730.01): Help -> About Microsoft Visual Studio

You may need to add "%USERPROFILE%\.dotnet\" to your PATH. The Entity Framework Core project mentions it.

Ah!

I had the following global.json in the root of my solution:

{
  "projects": [ "src", "tests" ],
  "sdk": {
    "version": "1.0.4"
  }
}

So I had to change the version from 1.0.4 to 2.0.0 and then close/re-open the solution.

Problem solved :)

In my case this was caused by another executable called "dotnet.exe" that was in my path before the one from the SDK. It seems that VS doesn't deal with this well.