If you sent a email to Hotmail Staff and waiting for a reply or them to fix the glitch (i had same problem with hotmail when they where updating it), try downloading ThunderBird. Its by the same people who done FireFox but its a email account holder, so you can access you emails from it, add additional accounts and when Hotmail is fixed, the emails are still all there but marked as unread.
Just as a temp. idea that is, till hotmail runs for you again.
((i also get the same problem on my iPhone, it comes up username and password is incorrect or emails could not be uploaded.))