Can’t choose .NET 4.7
You need to go to Visual Studio Installer and install an optional component “.NET Framework 4.7 Development Tools”.
visual-studio-2017
The current .NET SDK does not support targeting .NET Standard 2.0 error in Visual Studio 2017 update 15.3
It sounds like installing the VS2017 update for that specific version didn’t also install the .NET Core 2.0 SDK. You can download that here. To check which version of the SDK you’ve already got installed, run dotnet –info from the command line. Note that if there’s a global.json file in either your current working directory … Read more
VS 15.8.2 broke build tools – missing RuntimeIdentifier
At some point before attempting to build, you need to delete the obj folder. More than one person showed this to solve the problem. https://developercommunity.visualstudio.com/content/problem/312180/projects-fail-to-build-in-1580-due-to-errors-from.html
What do Yellow Warning Triangles mean on Dependencies in Visual Studio 2017?
As trite as it sounds, try rebuilding then restarting VS – and get on with your day 🙂