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WN25-SO-000400 Windows Server 2025 User Account Control (UAC) must, at a minimum, prompt administrators for consent on the secure desktop.

DISA STIG library V1R4
All changes in this version
first version loaded CAT II

Maps to SC-3 via CCI-001084

Title

Windows Server 2025 User Account Control (UAC) must, at a minimum, prompt administrators for consent on the secure desktop.

Control

UAC requirements are not applicable for Server Core installations (this is the default installation option for Windows Server 2025 versus Server with Desktop Experience). 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: ConsentPromptBehaviorAdmin Value Type: REG_DWORD Value: 0x00000002 (2) (Prompt for consent on the secure desktop) 0x00000001 (1) (Prompt for credentials on the secure desktop)

Discussion

UAC is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. This setting configures the elevation requirements for logged-on administrators to complete a task that requires raised privileges.

Related controls

CCI-001084

Fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> User Account Control: Behavior of the elevation prompt for administrators in Admin Approval Mode to "Prompt for consent on the secure desktop". The more secure option for this setting, "Prompt for credentials on the secure desktop", would also be acceptable.