title: "C# 2017 compiler could not be created" error message while opening project
body: <p>I've Visual Studio 2017 community edition. I have a C# project created using Visual Studio 2015. When I try to open the project in VS 2017 I get an error message prompt:</p>
  <blockquote>
  <p>---------------------  Microsoft Visual Studio</p>
  <hr />
  <p>Project 'dataStructureInCSharp' could not be opened because the Visual C# 2017 compiler could not be created.
  Please re-install Visual Studio.</p>
  <p>--------------------------- OK</p>
  </blockquote>
  <p>I'm trying to obtain help if anyone else has faced similar issue. I feel going the uninstall and then reinstall route is very costly for me and would try that option last if I've got no other resort.</p>
  <p>What I've done so far :</p>
  <ul>
  <li>Tried starting visual studio with administrative privileges</li>
  </ul>
  <p>But problem remained same.</p>
  <p>I tried creating a new console project solution from scratch but in that case I get very same error and an additional error error also shown below:</p>
  <p><a href="https://i.stack.imgur.com/utK7O.png" rel="noreferrer"><img src="https://i.stack.imgur.com/utK7O.png" alt="enter image description here" /></a></p>
  <p>System Environment: Windows 7 Ultimate Service Pack 1</p>