Visual Studio 2017 - Could not load file or assembly 'System.Runtime, Version=4.1.0.0' or one of its dependencies

Question

I am using Visual Studio 2017 and am trying to create a .Net Standard 1.5 library and use it in a .Net 4.6.2 nUnit test project.

I am getting the following error...

Answer 1

I tried all the solutions here, but to no avail. Eventually, I solved it by opening the new csproj file and manually added the following section:

..\packages\System.Runtime.4.3.0\lib\net462\System.Runtime.dll