So a while back i added additional user mailboxes to my outlook. I then closed the additional mailbox using the Account Settings -> Change <my account> -> More Settings -> Advanced tab -> Selected the additional mailbox -> remove.
the mailbox was removed but when i went back to default view of my account the accounts were still listed. So then i tried to right click on the account and close it. I got the message "This group of folders is associated with an email account. To remove the account . . . "