title: Could not load file or assembly Microsoft.Build.Utilities.Core
body: <p>When I open my project solution i get this error. What does this mean?
  In the Solution explorer, everything shows load failed. I cannot edit or open any file of the solution in VS.</p>
  
  <blockquote>
    <p><strong>Error :</strong><br>
    Could not load file or assembly 'Microsoft.Build.Utilities.Core, Version=14.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The module was expected to contain an assembly manifest</p>
  </blockquote>
  
  <p>I have already repair visual studio and ms build 2015</p>