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Windows Server 2022 machine inactivity limit must be set to 15 minutes or less, locking the system with the screen saver.


Overview

Finding ID Version Rule ID IA Controls Severity
V-254456 WN22-SO-000120 SV-254456r958400_rule Medium
Description
Unattended systems are susceptible to unauthorized use and must be locked when unattended. The screen saver must 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. Satisfies: SRG-OS-000028-GPOS-00009, SRG-OS-000029-GPOS-00010, SRG-OS-000031-GPOS-00012
STIG Date
Microsoft Windows Server 2022 Security Technical Implementation Guide 2024-06-14

Details

Check Text ( C-57941r849182_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-57892r849183_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.