http://discussions.apple.com/thread.jspa?messageID=8925333#8925333
I just had this issue happen to me as well. AOL support advised me to change my AOL password. You can do this after signing on at aol.com. This worked -- iTunes now recognizes my AOL screen name and new password.
Usually your password should work. If it is not here is what you need to do. First try having apple send the password to your email just to make sure your putting the password in correctly. If that does not work try calling or remake the account.
Basically you need to create an iTunes account even if you're downloading FREE apps. I don't understand why this is but that's how it is...
The same thing happened to me just now
If you have forgotten the username and password from previously, you will have to reactivate for a new one. Your computer will say transfer purchases or erase and sync, when on itunes and syncing your ipod with a new library. But if you remember your email and password you may be able to see your username, your username is your email. -I may be wrong in some ways though
Because your password is wrong
It means that the credentials are not the same in case of the account. Either the username of the account is wrong. The password could be wrong too.
It means that you are not entering the correct password. If it keeps prompting you of wrong password, an error comes. Your account could also be blocked by that.
just tell that person or you can email that website and tell them that you forgot the password. they will email it to you. if it was on this website, next to the word it says lost password. just click on that. it will tell you the right password.
That means you havent got the right password or you've spelled it wrong If you've spelt it wrong try again If you've got the password wrong talk to people in your town for the right password (this is for DS)
youve got the wrong username or password or you canceled it
well you are putting the wrong password . try putting the right password
check to see if your user name and password are the correct, maybe you got the wrong password for that account if it will not work then click on forgot password and maybe a new password