Windows Live Mail was working fine until 2 days ago.  I opened it then to check my emails and a message popped up that said "Authentication Failed Invalid credentials (Failure)"  In Configuration all the items listed were correct and at the end it listed Code: 800cccd1.  I am at a loss.  IU can go to Google to access my email, but prefer to use Windows Live Mail as that is what I am used to and have various sub accounts set up.  Please advise.