# man smb.conf
The default changed from yes to no with Samba 4.5. The default chagned again to ntlmv2-only with Samba 4.7, however the behaviour is unchanged.
Default: ntlm auth = ntlmv2-only
"See changed is written as chagned"
Merge request is running:
Thanks for reporting!
Fixed in master as 7f70e216fcda2ebfbdf952471931f9f3739a6e8e for Samba 4.11