A Unity ID allows you to buy and/or subscribe to Unity products and services, shop in the Asset Store and participate
in the Unity community.
That was it, thank you very much.
I updated to Unity 2017.2.0f3 and the problem persists.
I'm running Unity 2017.1.2f1. When I open a C# file in Visual Studio Community 2017 (15.5.0) and try to build the solution, I get a bunch of...