Feature | Details and mitigation | Deprecation announced |
---|---|---|
NTLM | All versions of NTLM, including LANMAN, NTLMv1, and NTLMv2, are no longer under active feature development and are deprecated. Use of NTLM will continue to work in the next release of Windows Server and the next annual release of Windows. Calls to NTLM should be replaced by calls to Negotiate, which will try to authenticate with Kerberos and only fall back to NTLM when necessary. For more information, see Resources for deprecated features. [Update - November 2024]: NTLMv1 is removed starting in Windows 11, version 24H2 and Windows Server 2025. | June 2024 |
Source:

Deprecated features in the Windows client
Review the list of features that Microsoft is no longer actively developing in Windows 10 and Windows 11.
learn.microsoft.com
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