Impossible to say.
You provided no information.
Outlook stores no information in an "Address Book," only in Contacts
Folders.
State your Outlook version.
State the information store you are using.

Signature
Russ Valentine
[MVP-Outlook]
>I am trying to find out where an email address resides...I have deleted it
> from the address book in the contacts...that is all that appears in the
> address book..when I type in the name and press check names the invalid
> email
> address appears...where is it stored...thanks in advance for your help