AIX 7.1 integrate AD with winbind

I have joined an AIX 7.1 into a 2012 AD domain sucesfully.
I can get ouput from wbinfo -u but when I try to access a share I get the following error :

check_ntlm_password:  Authentication for user [XXXXXX] -> [XXXXXX] FAILED with
 error NT_STATUS_NO_SUCH_USER

I have found that I'm missing /usr/lib/security/WINBIND_64 and /usr/lib/security/WINBIND libraries and they are not even located at samba path (/opt/freeware ).
winbindd, smbd and nmbd are running .
I guess I should have configured methods.cfg for a correct access but I can not find WINBIND library.
I have following winbind packages installed :
samba-winbind-3.6.9-1
samba-winbind-clients-3.6.9-1
samba-winbind-devel-3.6.9-1
samba-winbind-krb5-locator-3.6.9-1

Anyone knows if this is the problem?