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← Back to Microsoft Windows Server 2025 Security Technical Implementation Guide

V-278232

CAT II (Medium)

Windows Server 2025 User Account Control (UAC) approval mode for the built-in Administrator must be enabled.

Rule ID

SV-278232r1182191_rule

STIG

Microsoft Windows Server 2025 Security Technical Implementation Guide

Version

V1R1

CCIs

CCI-004895

Discussion

UAC is a security mechanism for limiting the elevation of privileges, including administrative accounts, unless authorized. This setting configures the built-in Administrator account so that it runs in Admin Approval Mode. Satisfies: SRG-OS-000373-GPOS-00156, SRG-OS-000373-GPOS-00157

Check Content

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: FilterAdministratorToken

Value Type: REG_DWORD
Value: 0x00000001 (1)

Fix Text

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> User Account Control: Admin Approval Mode for the Built-in Administrator account to "Enabled".