�Today, I ran across a new Knowledge Base article, 940791, which described a set of symptoms that were a perfect match for mine:
You install an automatic update for Microsoft Office Word 2007 on a Windows Vista-based computer. Additionally, the computer must be restarted after the automatic update is installed. However, if Word 2007 is running when you restart the computer, you may experience the following symptoms:
- The mouse does not work when you use Word 2007.
- You cannot open a Word document from the Search window in Windows Vista.
- You cannot open a Word document from Windows Desktop Search.
- Word crashes when you try to start or to exit Word.
The fix is fairly simple, As explained in the original article, just delete the following Registry subkey: