I came across one of the Troubleshooting questions in AD preparation exams that says you receive a message "Your account has expired. Please see your system administrator". All I know is that The Password is what we can assign to never expire or changed. As for the Account it can be Locked or disabled...!!
I searched and found some similar questions but for older version of Windows, I'm running Windows Server 2008 R2 Enterprise. but I can't find any Tab in User properties for the Account Expiry.