title: .net core hosting - server has two .net core runtimes installed
body: <p>Our app was originally built with .net core 1.x. We would like to upgrade to .net core 2.0.</p>
  
  <p>I installed the hosting bundle from <a href="https://docs.microsoft.com/en-us/aspnet/core/publishing/iis?tabs=aspnetcore2x#install-the-net-core-windows-server-hosting-bundle" rel="nofollow noreferrer">here</a>. But now I have the 1.0.0 Runtime and 2.0.5 runtime installed. </p>
  
  <p><a href="https://i.stack.imgur.com/PclsM.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/PclsM.png" alt="enter image description here"></a></p>
  
  <ol>
  <li>Do I need to uninstall the 1.0.0 runtime? </li>
  <li>How can I tell which runtime my app will use?</li>
  </ol>