Windows Server 2025 must prevent the display of slide shows on the lock screen.

STIG ID: WN25-CC-000010  |  SRG: SRG-OS-000095-GPOS-00049 |  Severity: medium (CAT II)  |  CCI: CCI-000381 |  Vulnerability Id: V-278080

Vulnerability Discussion

Slide shows displayed on the lock screen could display sensitive information to unauthorized personnel. Turning off this feature will limit access to the information to a logged-on user.

Check

Verify the registry value below:

Registry Hive: HKEY_LOCAL_MACHINE
Registry Path: \SOFTWARE\Policies\Microsoft\Windows\Personalization\

Value Name: NoLockScreenSlideshow

Value Type: REG_DWORD
Value: 0x00000001 (1)

If the registry value does not exist or is not configured as specified, this is a finding.

Fix

Configure the policy value for Computer Configuration >> Administrative Templates >> Control Panel >> Personalization >> Prevent enabling lock screen slide show to "Enabled".