title: Excel 2007 Hangs When Closing via .NET
body: <p>I have a Visual Basic .NET program which needs to open and close an Excel spreadsheet.  Opening and reading the spreadsheet work fine, but trying to close the Excel 2007 application causes it to hang.  It seems to close, but if you look in the task manager the application is still running.  The code that I'm using to close it is</p>
  
  <pre><code>wbkData.Close(saveChanges:=False)
  appExcel.Quit()
  wbkData = Nothing
  appExcel = Nothing
  </code></pre>
  
  <p>How can I get Excel to close properly?</p>