Hello. I need the file server to authenticate users from two domains. Of DOMAINA that the file server has joined and users of DOMAINB that maintains a trust relationship with DOMAINA. I have two domain forests (DOMAINE and DOMAINB), and a trust relationship exists between both. DOMAINA servers are running with samba version 4.5 (with CentOS 7 system) the DOMAINB server is running with windows server 2012R2. I use winbind on the file server (with CentOS 7) and samba version 4.4.4. I can access shares by logging on to DOMAINA users. But when I try to access the shares with DOMAINB users from DOMAINA workstations, I have permission denied. Follows the contents of the smb.conf file. [global] WORKGROUP = DOMAINE Realm = DOMAINA.COM Netbios name = FILESERVER Security = ads Log level = 3 Log file = /var/log/samba/log.all Max log size = 4000 Domain master = no Local master = no Idmap config *: backend = tdb Idmap config *: range = 1500-1000000 Idmap config DOMAINA: backend = rid Idmap config DOMAINA: range = 2000000-6000000 Idmap config DOMAINA: backend = rid Idmap config DOMAINA: range = 6000001-9000000 # Winbind Configurations # Winbind enum users = NO Winbind enum groups = NO Winbind refresh tickets = yes Winbind reconnect delay = 60 Winbind nested groups = yes Winbind expand groups = 10 # Winbind connections # Winbind max domain connections = 15 Winbind max clients = 200 # Configurations cache # Winbind cache time = 180 Winbind offline logon = NO # Template Configurations # Winbind nss info = template Template homedir = / home /% D /% U Template shell = / bin / false [Board] Path = / mnt / samba / directory Read only = No When I run the command the users are displayed: Wbinfo -u --domain = DOMAINB But when I run the following two commands the users and groups of the DOMAINB that is maintained the trust is not displayed. Getent passwd DOMAINB \\ administrator Getent group DOMAINB \\ financial But the /etc/nsswitch.conf file is configured correctly to use winbind. How can i make winbind work with two domains? Can someone please help me? -- Att, Edson Oliveira