General: Machine inactivity limit must be set to 15 minutes or less, locking the system with the screen saver


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.


To fix this 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.

STIG: Server 2019:
Server 2016:

STIG SRG-OS-000028-GPOS-00009, SRG-OS-000029-GPOS-00010, SRG-OS-000031-GPOS-00012
NIST 800-53:AC-2(5), AC-11
NIST 800-171: Rev2: 3.1.10
NIST 800-171a: 3.1.10[a], 3.1.10[b], 3.1.10[c]
PCI DSS v4.0: 8.2.8
Shared Assessment SIG 2022: H.9, I.1.20, M.1.23, U.1.4
CMMC v2 Mapping: AC.2.010
CMMC v2 Level2: AC.L2-3.1.10