I'm pretty sure my other sub account exists. For instance, of the little activity I have with it, I did have a profile on this answers.microsoft.com forum. And when I replied to a message started by that other "sub" account, I got a reply to one of my emails, call it *** Email address is removed for privacy ***. However, when I again try to log in to accounts.live.com hoping to get into my "sub" account, using *** Email address is removed for privacy ***, I am told the account does not exist. 

So I know I have a 2nd account, but don't know the login. If there is a reply to that 2nd sub account on the answers.microsoft.com forum here, I get an email to my *** Email address is removed for privacy *** address, but that address does not allow me to login in to accounts.live.com. So how do I track down my login for that sub account?

Thanks!