As far as I know, there's no popup/notification about the expiry dates.
The way I'd handle it is to create a simple process that uses the Internal Business Object 'Credentials' action 'List', which should have a column for the Status of the credential, to indicate whether it is expired or not. Then you could have it email you if any are expired with the list of expired credentials. Then I'd set it on a schedule daily and then forget about credentials until the automation emails you.
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Dave Morris
3Ci @ Southern Company
Atlanta, GA
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Dave Morris, 3Ci at Southern Company