title: How to ignore excel compatibility verification when converting to an old format?
body: <p>I'm using the COM library to save in C# a xlsx file into an Excel 8 format.</p>
  
  <p>The weird thing going on here is a compatibility verification popup, pausing the savingAs process and pointing out to some compatibility issues. These are not important errors, and the process becomes user-dependent because of this popup. Since I want to do it automatically, do you know how to jump this step?</p>