Signing in using a PIN must be turned off.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-63637	WN10-CC-000135	SV-78127r1_rule		Medium

Description
Strong sign-on must be used to protect a system. The PIN feature is limited to 4 numbers and caches the domain password in the system vault.

STIG	Date
Windows 10 Security Technical Implementation Guide	2016-11-03

Details

Check Text ( C-64387r1_chk )
If the following registry value does not exist or is not configured as specified, this is a finding: Registry Hive: HKEY_LOCAL_MACHINE Registry Path: \SOFTWARE\Policies\Microsoft\Windows\System\ Value Name: AllowDomainPINLogon Value Type: REG_DWORD Value: 0

Fix Text (F-69569r1_fix)
Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Logon >> "Turn on convenience PIN sign-in" to "Disabled".