Credentials Popup while opening Outlook 2013?

Hello-
I am having difficulty connecting to my Exchange e-mail (college e-mail) on Outlook 2013. When I open Outlook, a box pops up titles Windows Security. It gives me a field for my email, which I type, then a field for my password. I type in my password and the box pops back up again immediately. I am sure that I am typing my password correctly. How do I get Outlook to not prompt me for my credentials or how do I make Outlook accept the correct credentials?

Thanks for your support!