Cannot sign in to Windows Live Mail

I get into Windows Live Mail and click on the "Sign In" tab on the right hand side of the taskbar. That gives me a dialog box in which to enter my email address and password. When I enter this info and click Sign In, I get an error message that reads "X To help protect your Online id account you must signin again." Signing in again simply displays the same message and I get into a loop. I have reset the password and get the same message. Actually I get the same message no matter what password I enter. I'm at a loss. HELP!