Tests not running in Test Explorer
Solution 1:
If your projects aren't all AnyCpu then you may also want to check that the following 2 settings match:
[Right click test project] -> properties -> Build -> Platform target - e.g. x64
[Main Menu] -> Test -> Test Settings -> Default Processor Architecture -> X64
I found that when these didn't match my test project would silently fail to run.
Solution 2:
I had to change my async test methods to return Task instead of void.
The tests were then active and runnable in Test Explorer.