title: win32com.client.Dispatch("Outlook.Application") error pywintypes.com_error: (-2147221005, 'Invalid class string', None, None)
body: <p>I am on windows 7 and I have windows live installed.
  Now when I am trying to run following code</p>
  
  <pre><code>import win32com.client
  win32com.client.Dispatch("Outlook.Application")
  </code></pre>
  
  <p>I am getting following error</p>
  
  <pre><code>Traceback (most recent call last):
    File "&lt;stdin&gt;", line 1, in &lt;module&gt;
    File "C:\Python27\lib\site-packages\win32com\client\__init__.py", line 95, in
  Dispatch
      dispatch, userName = dynamic._GetGoodDispatchAndUserName(dispatch,userName,c
  
      lsctx)
        File "C:\Python27\lib\site-packages\win32com\client\dynamic.py", line 108, in
      _GetGoodDispatchAndUserName
          return (_GetGoodDispatch(IDispatch, clsctx), userName)
        File "C:\Python27\lib\site-packages\win32com\client\dynamic.py", line 85, in _
      GetGoodDispatch
          IDispatch = pythoncom.CoCreateInstance(IDispatch, None, clsctx, pythoncom.II
      D_IDispatch)
      pywintypes.com_error: (-2147221005, 'Invalid class string', None, None)
  </code></pre>
  
  <p>I have another machine with windows xp and Outlook installed. 
  I ran the same code and I got the same error.</p>
  
  <p>One more question. 
  How can I get the com of windows live on windows 7?</p>
  
  <p>Any suggestions and comments will be appreciated.</p>