title: Visual Studio 2017 Cannot Modify - Restart Required
body: <p>I have been trying to update and modify my Visual Studio 2017 for 2 days now, but each time I run the Visual Studio Installer, I get this message: </p>
  
  <blockquote>
    <p>"A restart is required. If needed, any remaining setup will resume
    after the restart."</p>
  </blockquote>
  
  <p>Obviously I restarted about 10 times... </p>
  
  <p>Any idea what I must delete where to get rid of any temp garbage that is hindering my attempts to modify my installation?  </p>