Microsoft Windows 11 Security Technical Implementation Guide

The Microsoft Windows 11 Security Technical Implementation Guide (V2 R11) has 257 STIG checks. New to STIG checklists? Read What is a STIG checklist?, CKL vs CKLB, and STIG vs SCAP benchmark.

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Severity

Version

V2 · R11

CurrentPublished Wed Sep 30 2026

The system must be configured to meet the minimum session security requirement for NTLM SSP based servers.

Microsoft Windows 11 Security Technical Implementation Guide

Assessment Title

Rule Text

The system must be configured to meet the minimum session security requirement for NTLM SSP based servers.

Description

Discussion Text

Microsoft has implemented a variety of security support providers for use with RPC sessions. All of the options must be enabled to ensure the maximum security level.

New to STIG checklists? Read What is a STIG checklist? and CKL vs CKLB.

Objective

V-253465

Rule

SV-253465r1268251_rule

Severity

medium

Rule Version

WN11-SO-000220

Documentable

false

IA Controls

NIST SP 800-53

Rev 5

Assessment Procedure

Check Text

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: \SYSTEM\CurrentControlSet\Control\Lsa\MSV1_0\

Value Name: NTLMMinServerSec

Value Type: REG_DWORD
Value: 0x20080000 (537395200)

Implementation Procedure

Fix Text

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Network security: Minimum session security for NTLM SSP based (including secure RPC) servers" to "Require NTLMv2 session security" and "Require 128-bit encryption" (all options selected).

STIG check 202 of 257 in the Microsoft Windows 11 STIG checklist

← Previous · V-253464The system must be configured to meet the minimum session security requirement for NTLM SSP based clients.Next · V-253466 →The system must be configured to use FIPS-compliant algorithms for encryption, hashing, and signing.