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


Finding ID Version Rule ID IA Controls Severity
V-220920 WN10-SO-000070 SV-220920r569187_rule Medium
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.
Microsoft Windows 10 Security Technical Implementation Guide 2022-04-08


Check Text ( C-22635r555245_chk )
If the following registry value does not exist or is not configured as specified, this is a finding:

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-22624r555246_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.