miss my friend

there is this friend i have who lives in a different country.and i used to chat with ,suddenly i never c her online and her display name changed to her email address,i sent her emails and no reply ,so i thought if her account is still available that i c her secret question like i used to in the past but i got this instead:(((Microsoft .NET Passport has made your account temporarily unavailable to help prevent other users from guessing or obtaining your password. Please try again later, or reset your password using another method)))what does mean????does me her account no longer exists or did someone hack her account and if it exists could it have been unavailable for more than a month.please help.miss my friend alot