Minimum and Maximum Password Age
The Minimum Password Age setting must be lower than the Maximum Password Age setting unless the Maximum Password Age is set to 0, in which case the password never expires. If the Maximum Password Age is set to 0, the Minimum Password Age can be set to any value between 0 and 998.
Password Best Practices
Best practices suggest setting a maximum password age of 60 days, a small window of time during which the password might be hacked and used.
Setting a minimum password age is useful in conjunction with the Enforce password history setting, which determines how many new passwords you must use before you can reuse a password.
