title: The tools version "15.0" is unrecognized - Incompatible/Unloaded project in Visual Studio 2019 (v16.0.0 Preview 5.0)
body: <p><strong>UPDATES</strong></p>
  
  <ul>
  <li>Repaired .NET Core 2.1 installed version 2.2 as well</li>
  <li>uninstalled VS 2019 and re installed</li>
  <li>it does work on another machine with VS 2017 &amp; VS 2019 installed (same versions)</li>
  </ul>
  
  <p><strong>UPDATES</strong></p>
  
  <p>I am facing this for quite a while and I really want to make use of the 2019 Version of VS. </p>
  
  <p>When opening a VS C# MVC project that is on Azure DevOps and works on all previous versions (2015-2017) is not working in 2019.</p>
  
  <p>The first error I get is: </p>
  
  <blockquote>
    <p>.csproj : error  : The tools version "15.0" is unrecognized. Available tools versions are "14.0", "2.0", "3.5", "4.0".</p>
  </blockquote>
  
  <p>So I change the 15.0 to the suggested ones one by one and tried reloading the project, none solved the error, in fact I am getting another which is the following:</p>
  
  <blockquote>
    <p>.csproj : error  : The application for the project is not installed</p>
  </blockquote>
  
  <p>No idea what I can/should do here.</p>
  
  <p>Anyone can suggest me anything, has some info about it and so on?</p>