Suddenly today I have no hotmail and no emails! Where did all my emails go??

I have had my account for about 15 years and have my whole life on hotmail including airplane flights coming up, new classes etc. I need to have access to my emails and suddenly today I am not able to access my emails on my hotmail account on my laptop! I saw or heard no warnings of such a big change coming. How on earth did this happen this way?