title: unit testing not running in vs but run fine in azure CI pipeline
body: <p>I have some unit tests made with MSTest, everything was running fine locally in Visual Studio Enterprise 2019 and tests also ran fine in Azure DevOps CI build. I had to change to a new machine today with a freshly installed VS. The problem is no tests will run locally ever since I started working in this new VS environment (the tests still run fine in the CI build).</p>
  
  <p>Can anyone tell me why this is? Am I missing some packages or so? MSTest framework/adapter etc. is installed locally of course </p>
  
  <p>Locally in VS:</p>
  
  <p><img src="https://i.stack.imgur.com/LZliY.png" alt="6 not run"></p>
  
  <p>Azure DevOps CI build:</p>
  
  <p><img src="https://i.stack.imgur.com/mm0dX.png" alt="total tests passed: 6"></p>