windows live mail

hi

i have been using wlm for a very long time on windows 10 without any problems

today i wake up and try my wlm and all i get is please enter your user name and password

my user name is there and i just have to enter the password

i have done this and it will not accept the correct password

i have gone to web sky yahoo and signed in and every thing seems fine

i have not changed anything in my account

what is going on