How can I force a user to change their Password at next login? If the Password is changed on the Setup >> System >> Users window and password expiry is active you will be asked if you wish to force the user to change their password on next login. If you say “yes” to this dialog, the system will change the date recorded as the last password changed date for that user to 01-Jan-1980. This then forces the password to become expired and the user will be forced to change their password on next login. Note that you must enable at least 1 grace login to allow them to change their password after it has expired.
Also there is an Extras Menu option available from the Setup >> System >> Users window. You may select this option from the menu bar to force the user to change their password without having to change the password.