title: Android SDK could not be found - Android SDK Location is correct
body: <p>I've installed Xamarin and tried in Visual Studio to start with a small app and test the web view with this. So for this, I've installed the JDK, the Android SDK and Android NDK on my computer. I'm working throught a tutorial for a web view and I have the problem, when I run the <code>Main.axml</code>, it shows me the error, that my Android SDK could not be found (look at the first attachement). When I check my location paths for the JDK, SDK and NDK, it shows me the correct path and a green tick, so the path and files are correct (look at the second attachement). But my app don't recognize it. What's the problem here? I found some threads on stackoverflow for the same problem, but nothing helped me.</p>
  
  <p><strong>1. Attachement</strong></p>
  
  <p><a href="https://i.stack.imgur.com/X6OJn.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/X6OJn.png" alt="enter image description here"></a></p>
  
  <p><strong>2. Attachement</strong></p>
  
  <p><a href="https://i.stack.imgur.com/82pMZ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/82pMZ.png" alt="enter image description here"></a></p>
  
  <ul>
  <li><strong>OS:</strong> Windows 8.1</li>
  <li><strong>IDE</strong>: MS Visual Studio 14.0.23</li>
  <li><strong>Xamarin:</strong> 4.2.0</li>
  </ul>
  
  <p><strong>EDIT:</strong></p>
  
  <p>I also tried to open my Android SDK Manager, but this one is disabled in my visual studio. I've installed Xamarin, so it should work:</p>
  
  <p><a href="https://i.stack.imgur.com/H8Oyy.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/H8Oyy.png" alt="enter image description here"></a></p>
  
  <p>Any ideas? Thanks.</p>