I checked in a project on one computer, checked out on another, and find that the binaries installed by NuGet are missing. I could check them in to source control as well,
In VS2017, right-click on the solution => Open CommandLine => Developer Command Line.
Once thats open, type in (and press enter after)
dotnet restore
That will restore any/all packages, and you get a nice console output of whats been done...