title: SSIS - Excel connection fails with .xlsx
body: <p>I have a simple SSIS package with data flow task where I have just Excel Source. </p>
  
  <p><img src="https://i.imgur.com/szpDogc.png" alt="Connection Manager"></p>
  
  <p>When I am trying to connect to <strong>.xlsx</strong> file it fails with the following message:</p>
  
  <p><img src="https://i.imgur.com/Sd8006g.png" alt="Fail"></p>
  
  <blockquote>
    <p>Could not retrieve the table information for the connection manager 'Excel Connection Manager'.
    Failed to connect to the source using the connection manager 'Excel Connection Manager'</p>
  </blockquote>
  
  <p>There is no problem when I save this file as <strong>.xls</strong>. Then I can read and manipulate data. It persists with <strong>.xlsx</strong> files only. Any idea?</p>
  
  <p>No difference whether the Run64BitRuntime is TRUE or FALSE.</p>