I should clarify. By down, I mean intermittent. My phone keeps having a message pop up telling me I need to re-enter my password. I spent a fair amount of time trying to change my password (in case my account had been hacked) and was unable to do so because I kept losing access to the site. Finally went to twitter and searched for "outlook" and it sounds like the entire world is having issues.

That being said, I can still access my outlook email right now. Some users are being told their account does not exist when they try to sign in.