I may be missing something really obvious here, but I'm tired of searching and I'm hoping someone can just tell me what I'm missing. User has Outlook 2010 and when she opens a new message and starts typing in the To: field it does not show a list of name based on the characters you have typed in the To: field. Other users have no problem with this. Logged into another PC as this user and configured Outlook and it works on the other computer so it's computer specific not user specific. Looked through all kinds of settings, etc. comparing the two computers and everything looked the same. Even deleted the Outlook profile and created a new one but that didn't solve it either. What is it that controls whether or not that drop down list works?