When you install Active Directory Client Extensions on a computer that is running Windows 98, the system files that provide NTLM 2 support are also automatically installed. You can add NTLM 2 support to Windows 98 by installing the Active Directory Client Extensions.Īfter you upgrade all computers that are based on Windows 95, Windows 98, Windows 98 Second Edition, and Windows NT 4.0, you can greatly improve your organization's security by configuring clients, servers, and domain controllers to use only NTLM 2 (not LM or NTLM). NTLM 2 has been available for Windows NT 4.0 since Service Pack 4 (SP4) was released, and it is supported natively in Windows 2000. In its ongoing efforts to deliver more secure products to its customers, Microsoft has developed an enhancement, called NTLM version 2, that significantly improves both the authentication and session security mechanisms. Recent improvements in computer hardware and software algorithms have made these protocols vulnerable to widely published attacks for obtaining user passwords. Windows NT also supports the NTLM session security mechanism that provides for message confidentiality (encryption) and integrity (signing). NTLM provides improved security for connections between Windows NT clients and servers. Windows NT challenge/response (also known as NTLM version 1 challenge/response) The LM variant allows interoperability with the installed base of Windows 95, Windows 98, and Windows 98 Second Edition clients and servers.Historically, Windows NT supports two variants of challenge/response authentication for network logons:
Netdrive 2 windows authentication how to#
This article describes how to enable NTLM 2 authentication.Īpplies to: Windows 10 - all editions Original KB number: 239869 Summary
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