To configure NTLMv2 authentication, the following registry keys are worth knowing about:
The value 0x00000003 means to send NTLMv2 response only. Clients will use NTLMv2 authentication;
use NTLMv2 session security if the server supports it. Domain controllers accept LM,
NTLM, and NTLMv2 authentication.
The value 0x00080000 means permit only NTLMv2 session security. If either NtlmMinClientSec or
NtlmMinServerSec is set to 0x00080000, the connection will fail if NTLMv2
session security is negotiated.