On two computers, one running Win7 and one with Win8, I can type the first letter of my email address into the Outlook sign-in page and my email address will drop down.  I can click on it then type in my password.  On my computer (also Win8)  I have to type the whole email address each time before typing the password.  The settings in the advanced tab under "internet options" are exactly the same for both Win8 computers.   This is very frustrating.  My computer is at home and I don't need to hide my email address from other users.