iCloud username and password

[MoneyGuy]

Suddenly, now when I download email I get a message that my iCloud username or password is incorrect. I've never used iCloud and have never created a username or password. How can I disable iCloud or fix this problem so I don't constantly get this error message?

 

[twerppoet]

Check your iCloud settings and make sure that you are not signed in with something (correct or not).

If you are an old MobileMe users, something might have gotten migrated by mistake. If not, I have no idea.