https://bugs.winehq.org/show_bug.cgi?id=55304
--- Comment #5 from Hans Leidekker hans@meelstraat.net --- (In reply to Dmitry Timoshkov from comment #3)
(In reply to Hans Leidekker from comment #1)
I have replaced QueryContextAttributesA(SECPKG_ATTR_KEY_INFO) with QueryContextAttributesA(SECPKG_ATTR_SESSION_KEY) after implementing the attribute for Kerberos and NTLM.
According to my testing Kerberos implementation under Windows 10 returns SEC_E_UNSUPPORTED_FUNCTION for QueryContextAttributes(SECPKG_ATTR_SESSION_KEY). What Windows version are you testing with?
What about Negotiate?