Microsoft officially deprecates NTLM and promotes Kerberos authentication
Several months after announcing its intention to do so, Microsoft has official deprecated the NTLM (NT LAN Manager) authentication protocol in Windows and Windows Server.
NTLM is now a very old protocol which has been superseded by the more secure and feature-rich Kerberos. It will still be possible to use NTLM until the next release of Windows and Windows Server, but Microsoft is keen for users to take action now.