title: VS2017 MSBuild autodetection takes MSBuild/v14 instead of v15 for WPF project
body: <p>We are slowly migrating to VS2017 and most of the project do that silently without much interference. Today started migrating a WPF project from VS2015 to VS2017. When I build the solution I get the following warning:</p>
  
  <pre><code>MSBuild auto-detection: using msbuild version '14.0' from 'C:\Program Files (x86)\MSBuild\14.0\bin'.
  </code></pre>
  
  <p>I googled the problem but I seem to be alone out there. I have no clue what could cause this. The .Net target is 4.5.1 but changing that to 4.6.2 make no difference. Neither does clean or remove bin and obj directories. Who has got a clue?</p>