The machine inactivity limit must be set to 15 minutes, locking the system with the screen saver.

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The machine inactivity limit must be set to 15 minutes, locking the system with the screen saver.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-73645	WN16-SO-000140	SV-88309r2_rule		Medium

Description
Unattended systems are susceptible to unauthorized use and should be locked when unattended. The screen saver should be set at a maximum of 15 minutes and be password protected. This protects critical and sensitive data from exposure to unauthorized personnel with physical access to the computer.

STIG	Date
Windows Server 2016 Security Technical Implementation Guide	2019-03-13

Details

Check Text ( C-73727r2_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\Microsoft\Windows\CurrentVersion\Policies\System\ Value Name: InactivityTimeoutSecs Value Type: REG_DWORD Value: 0x00000384 (900) (or less, excluding "0" which is effectively disabled)

Fix Text (F-80095r2_fix)
Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Interactive logon: Machine inactivity limit" to "900" seconds or less, excluding "0" which is effectively disabled.