title: Python 3.5 executable with Excel COM objects
body: <p>I have a Python code that opens up an Excel file. Uses one of the VBA functions in there to retrieve some data. And do some analysis on that data. All of this works on my computer. It also works when I compile it using PyInstaller into an EXE.</p>
  
  <p>However, when distributing this EXE to a colleague that has nothing Python related installed, but only Excel, it does not work. I suspect it has something to do with working with Excel because of the error message.</p>
  
  <pre><code>Traceback &lt;most recent call last&gt;:
    File "Check.py", line 12, in &lt;module&gt;
    File "&lt;COMObject &lt;unknown&gt;&gt;", line 8, in Open
  pywintypes.com_error: &lt;-2146777998, 'OLE error 0x800ac472', None, None&gt;
  Failed to execute script Check
  </code></pre>
  
  <p>Any ideas on how to proceed?</p>