Hi, First, sorry if this is a bit long. I'm having problems finding what is wrong with my setup. Running Samba 3.0.10-1.4E.6 on CentOS 4.3. PDC is AD on windows 2003. Samba and winbind are running. My smb.conf file: # Samba config file created using SWAT # from 127.0.0.1 (127.0.0.1) # Date: 2006/05/30 10:52:16 # Global parameters [global] workgroup = MONTREAL realm = CASTORTECH.COM interfaces = eth0 security = ADS password server = castor-srvr1 wins server = 192.168.64.20 [Main] comment = Test path = / guest ok = yes writeable = yes I was able to join the domain with net ads join. I see the Linux box in AD. I also see it in my Network Places on Windows and the share called Main but it asks for a user/password when I try to access it and it doesn't work. If I run net ads testjoin: Join is OK If I run net ads info: LDAP server: 192.168.64.20 LDAP server name: castor-srvr1 Realm: CASTORTECH.COM Bind Path: dc=CASTORTECH,dc=COM LDAP port: 389 Server time: Fri, 02 Jun 2006 14:04:26 GMT KDC server: 192.168.64.20 Server time offset: -947 If I run net ads lookup: Information for Domain Controller: castor-srvr1 Response Type: SAMLOGON GUID: e7508a6a-4561-4440-b45c-9fd246d4c93c Flags: Is a PDC: yes Is a GC of the forest: yes Is an LDAP server: yes Supports DS: yes Is running a KDC: yes Is running time services: yes Is the closest DC: yes Is writable: yes Has a hardware clock: no Is a non-domain NC serviced by LDAP server: no Forest: castortech.com Domain: castortech.com Domain Controller: castor-srvr1.castortech.com Pre-Win2k Domain: MONTREAL Pre-Win2k Hostname: CASTOR-SRVR1 Site Name: Default-First-Site-Name Site Name (2): Default-First-Site-Name NT Version: 5 LMNT Token: ffff LM20 Token: ffff Net ads user also return a list of the domain's users. Wbinfo -u and -g return a list of the domain's users and groups. But if I run wbinfo -a simon%bvhdohgo I get: plaintext password authentication failed error code was NT_STATUS_NO_SUCH_USER (0xc0000064) error messsage was: No such user Could not authenticate user simon%bvhdohgo with plaintext password challenge/response password authentication succeeded I also tried with administrator but I got the same result. But I ran wbinfo --set-auth-user=administrator%pass and get MONTREAL\administrator%pass if I run wbinfo --get-auth-user. So it is able to get the domain info. I don't get it. And of course, getent passwd returns the local users, not the one from the domain. Passwd, shadow and group are set as files winbind in /etc/nsswitch.conf. I think that I am pretty close to a solution but I don't know what to do next. Any idea what is wrong and what should I check next? Thanks! Simon