Windows Server 2022 local users on domain-joined member servers must not be enumerated.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
| V-254430 | WN22-MS-000030 | SV-254430r958478_rule | Medium |
| Description |
| The username is one part of logon credentials that could be used to gain access to a system. Preventing the enumeration of users limits this information to authorized personnel. |
| STIG | Date |
| Microsoft Windows Server 2022 Security Technical Implementation Guide | 2025-01-14 |
Details
| Check Text (C-57915r849104_chk) |
| This applies to member servers. For domain controllers and standalone or nondomain-joined systems, this is NA. 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\Policies\Microsoft\Windows\System\ Value Name: EnumerateLocalUsers Type: REG_DWORD Value: 0x00000000 (0) |
| Fix Text (F-57866r849105_fix) |
| Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Logon >> Enumerate local users on domain-joined computers to "Disabled". |