Windows Server 2022 local users on domain-joined member servers must not be enumerated.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-254430 | SRG-OS-000095-GPOS-00049 | WN22-MS-000030 | SV-254430r958478_rule | 2026-05-19 | 2 |
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.
ℹ️ Check
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
Configure the policy value for Computer Configuration >> Administrative Templates >> System >> Logon >> Enumerate local users on domain-joined computers to "Disabled".