title: Up-To-Date check claims missing build output since VS 2019
body: <p>Since I am using Visual Studio 2019, some of my old projects are rebuild every time I, even though nothing changed. Build output states the following:</p>
  
  <blockquote>
    <p>Up-To-Date check: Project: ..\MyProject.vcxproj, Configuration: Debug Win32</p>
    
    <p>Project is not up-to-date: build output 'd:\mysolution\myproject\debug\' is missing</p>
  </blockquote>
  
  <p>The mentioned output directory does exist, but with capitalization (<em>D:\MySolution\MyProject\Debug</em>)</p>
  
  <p>Building the same project in Visual Studio 2017, MSBuild correctly detects when nothing has changed:</p>
  
  <blockquote>
    <p>Up-To-Date check: Project: MyProject, Configuration: Debug Win32</p>
    
    <p>All outputs are up-to-date.</p>
  </blockquote>
  
  <p>The problematic projects are managed C++ projects, configured platform toolset is "Visual Studio 2013 (v12)".</p>