Send NTLMv2 response only\refuse LM & NTLM RRS feed

  • Question

  • Hi all,

    I need to activate a security policy for NTLM authentication levels in an environment. It is necessary to activate "Send NTLMv2 response only \ refuse LM & NTLM".

    The DCs and servers are Windows Server 2012 R2 and Windows Server 2016. The client computers are Win 7, 8.1 and 10.

    I understand that the environment is compatible with NTLMv2, but I have a question. In the event that there are devices that are not compatible with NTLMv2 authentication, they will not be able to authenticate with the domain, if this happens, can we go back?

    Thank you very much

    Tuesday, August 25, 2020 10:40 PM