Windows Server 2019 network selection user interface (UI) must not be displayed on the logon screen.

STIG ID: WN19-CC-000170  |  SRG: SRG-OS-000095-GPOS-00049 |  Severity: medium |  CCI: CCI-000381 |  Vulnerability Id: V-205690

Vulnerability Discussion

Enabling interaction with the network selection UI allows users to change connections to available networks without signing in to Windows.

Check

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

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

Value Name: DontDisplayNetworkSelectionUI

Value Type: REG_DWORD
Value: 0x00000001 (1)

Fix

Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Logon >> "Do not display network selection UI" to "Enabled".
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