title: Could not load file or assembly Operation is not supported. (Exception from HRESULT: 0x80131515)
body: <p>When I run CodedUI Test from a small Console tool via <code>vstest.console.exe</code> from a scheduled task I sometimes see this error message on different PCs:</p>
  
  <blockquote>
    <p>error : Could not load file or assembly 'file:///C:\foobar.dll' or
    one of its dependencies. Operation is not supported. (Exception from
    HRESULT: 0x80131515)</p>
  </blockquote>
  
  <p>Why/what is this not supported?</p>