This policy setting determines the number of days that you must use a password before you can change it. The range of values for this policy setting is between 1 and 999 days. (You may also set the value to 0 to allow immediate password changes.) The default value for this setting is 0 days. Countermeasure: Configure the Minimum password age setting to a value of at least 2 days. Users should know about this limitation and contact the help desk if they need to change their password during that 2-day period. If you configure the number of days to 0, immediate password changes would be allowed, which we do not recommend. When configuring this setting you should also configure the Maximum password age to a value that makes sense in combination with this one. Potential Impact: If an administrator sets a password for a user but wants that user to change the password when the user first logs on, the administrator must select the User must change password at next logon check box, or the user will not be able to change the password until the next day.

[min age in mins]

(1) GPO: Computer Configuration\Windows Settings\Security Settings\Account Policies\Password Policy\Minimum password age (2) REG: ### (3) WMI: root\rsop\computer#RSOP_SecuritySettingNumeric#Setting#KeyName = 'MinimumPasswordAge' And precedence=1