I’ve seen a lot of strange behavior from windows updates, but this apparently wasn’t one. Essentially here is what was going on: the user would try to click on an attachment in Outlook 2003, particularly those that were forwarded emails. Then, nothing happened. No message, no error, nothing. Just doubleclick and that’s it…. right click and open didn’t work either. After a bit of research I found this happening with a few different versions of Outlook.