PKU2U authentication using online identities must be prevented.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-63767	WN10-SO-000185	SV-78257r1_rule		Medium

Description
PKU2U is a peer-to-peer authentication protocol. This setting prevents online identities from authenticating to domain-joined systems. Authentication will be centrally managed with Windows user accounts.

STIG	Date
Windows 10 Security Technical Implementation Guide	2016-10-28

Details

Check Text ( None )
None

Fix Text (F-69695r1_fix)
Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Network security: Allow PKU2U authentication requests to this computer to use online identities" to "Disabled".