Users will be warned in advance that their passwords will expire.

From Windows Server 2008 R2 Domain Controller Security Technical Implementation Guide

Associated with IA controls: ECSC-1

SV-32311r1_rule Users will be warned in advance that their passwords will expire.

Vulnerability discussion

This setting configures the system to display a warning to users telling them how many days are left before their password expires. By giving the user advanced warning, the user has time to construct a sufficiently strong password.

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Configure the policy value for Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options -> “Interactive Logon: Prompt user to change password before expiration” to “14” days or more.

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