I have a user that has Windows 7 (64bit), Office Home & Business 2013 and IBM Notes 9.0.1 FP4.

1.  If the user opens a Word document (docx) directly with Microsoft Word (Notes client is not involved), Microsoft Word works as expected.

2.  If the user opens a Word document from email (as an attachment) in iNotes, Microsoft Word works as expected.

3.  If the user opens a Word attachment from email using the IBM Notes client, Microsoft Word opens and then immediately closes without an error. 

If the user tries option 3, the only way to get the Microsoft Word working again is by opening Microsoft Word by itself and he get's the following error message:

"We're sorry, but Word has run into an error that is preventing it from working correctly.  Word will need to be closed as a result.  Would you like to repair now?"

The user clicks: <Repair Now> and Microsoft Word then goes through the repair process and does some kind of internet check and then the product works fine until the user forgets and opens another Microsoft Office attachment that was emailed to him.

I have the same setup as he.  I tried what he tried and all works fine for me with the same attachments. 

Reinstalling Office and Notes has no effect.  Any ideas would be greatly appreciated.