https://bugs.winehq.org/show_bug.cgi?id=42485
--- Comment #2 from Hans Leidekker hans@meelstraat.net --- (In reply to Hans Leidekker from comment #1)
I don't see these failures on Debian 9:
$ ntlm_auth --version Version 4.5.12-Debian
What is your version? Can you attach your /etc/smb.conf here?
That should be /etc/samba/smb.conf.