title: How to find out the installation-directory / path from COM-AddIn
body: <p>I've got a List of COM-AddIns from Excel and want to find out the installation-path of the AddIns, but the object "Microsoft.Office.Core.COMAddIn" only have the following Properties:</p>
  
  <pre><code>Application
  Connect
  Creator
  Description
  Guid
  Object
  Parent
  ProgId
  </code></pre>
  
  <p>And the Property Object is "Nothing/Null".</p>
  
  <p>Is there a way to use the Interop? Or do i use the guid and search in the registry?</p>