The built-in Microsoft password complexity filter must be enabled.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-63427	WN10-AC-000040	SV-77917r1_rule		Medium

Description
The use of complex passwords increases their strength against guessing and brute-force attacks. This setting configures the system to verify that newly created passwords conform to the Windows password complexity policy.

STIG	Date
Windows 10 Security Technical Implementation Guide	2018-04-06

Details

Check Text ( C-64175r1_chk )
Verify the effective setting in Local Group Policy Editor. Run "gpedit.msc". Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Password Policy. If the value for "Password must meet complexity requirements" is not set to "Enabled", this is a finding. If the site is using a password filter that requires this setting be set to "Disabled" for the filter to be used, this would not be considered a finding.

Check Text ( C-64175r1_chk )

Verify the effective setting in Local Group Policy Editor.
Run "gpedit.msc".

Navigate to Local Computer Policy >> Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Password Policy.

If the value for "Password must meet complexity requirements" is not set to "Enabled", this is a finding.

If the site is using a password filter that requires this setting be set to "Disabled" for the filter to be used, this would not be considered a finding.

Fix Text (F-69355r1_fix)
Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Password Policy >> "Password must meet complexity requirements" to "Enabled".