Xunit Unit Tests will not run

Question

I am completely stuck on this issue. So my team has a unit test project in a services test project. The tests are discovered in the test explorer pane however when I try and

Answer 1

I had the same problem and I fixed it by updating Visual Studio 2017 from 15.5.2 to 15.5.4 and updating my test project references from:

to:

And restarting Visual Studio (apparently VS caches and uses the previous version even after you've updated).

Not sure if one of the 3 things or the combination of them fixed it.