title: Excel 2013 'Disable AutoRecover for this workbook only' does not work
body: <p>I'm using Python to write data to and open an excel file, and also to close it if already open using os.system('TASKKILL /F /IM excel.exe').</p>
  <p>Problem is, when the excel file then opened, Document Recover will pop up even though I've already ticked Options &gt; Save &gt; Disable AutoRecover for this workbook only.</p>
  <p>Is this an excel bug?</p>