[Samba] sid_to_uid/public share problem

Robert robert at spotswood-computer.net
Mon Jun 9 20:06:11 GMT 2008

I've got a public share that any user is supposed to be able to access. But no 
matter who I try to connect as, I get the dreaded: "NT_STATUS_NO_SUCH_USER".

Important info: Samba version: 3.0.28a, OS: Kubuntu 8.04

Looking at the logs, I think the problem is here:

  sid_to_uid for pcguest (S-1-5-21-1683542063-625151989-839735972-501) failed

My smb guest account line is: guest account = pcguest

The user does exist in the samba database (pdbedit -Lv pcguest):

Unix username:        pcguest
NT username:
Account Flags:        [U          ]
User SID:             S-1-5-21-1683542063-625151989-839735972-501
Primary Group SID:    S-1-5-21-1683542063-625151989-839735972-513
Full Name:
Home Directory:       \\linuxii\pcguest
HomeDir Drive:        H:
Logon Script:         home.bat
Profile Path:         \\linuxii\profiles\pcguest
Domain:               HAP
Account desc:
Munged dial:
Logon time:           0
Logoff time:          never
Kickoff time:         never
Password last set:    Mon, 09 Jun 2008 13:42:49 CDT
Password can change:  Mon, 09 Jun 2008 13:42:49 CDT
Password must change: never
Last bad password   : 0
Bad password count  : 0

and the user exists in /etc/passwd (getent passwd | grep -i pcguest):

I've reset both passwords to the same thing just to be sure, but no joy. Even 
restarted the samba server. Still the problem persists.

From the samba server itself, where linuxii is the server name, everyone is 
the public share, and the password for pcguest is just the letter a (for 
now), "smbclient //linuxii/everyone -U pcguest%a" returns:
Domain=[HAPPY] OS=[Unix] Server=[Samba 3.0.28a]
tree connect failed: NT_STATUS_NO_SUCH_USER

It also does that for any and every other user too.

Now if I try to connect to pcguest's home directory 
(smbclient //linuxii/pcguest -U pcguest%a) I succeed:
Domain=[HAP] OS=[Unix] Server=[Samba 3.0.28a]
smb: \> 

Using "pdbedit -Lw pcguest", it shows the uid is correct (1042 which 
matches /etc/password):
[U          ]:LCT-484D79A9:

So what am I missing???

        workgroup = HAPPY
        netbios name = LINUXII
        interfaces =,
        bind interfaces only = Yes
        passdb backend = tdbsam
        guest account = pcguest
        passwd program = /usr/bin/passwd %u
        passwd chat = *New*UNIX*password* %n\n *ReType*new*UNIX*password* %n\n 
        username map = /etc/samba/smbusers
        unix password sync = Yes
        lanman auth = Yes
        client lanman auth = Yes
        log level = 3
        log file = /var/log/samba/log.%m
        max log size = 50
        name resolve order = wins lmhosts bcast
        time server = Yes
        deadtime = 15
        socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
        printcap name = cups
        disable spoolss = Yes
        show add printer wizard = No
        add machine script = /usr/sbin/useradd -d /dev/null -s /bin/false %u
        logon script = home.bat
        logon path = \\%L\profiles\%U
        logon drive = H:
        logon home = \\%L\%U
        domain logons = Yes
        os level = 34
        preferred master = Yes
        domain master = Yes
        dns proxy = No
        wins proxy = Yes
        wins support = Yes
        hosts allow = 192.168.1., 127.

        comment = Home Directory
        read only = No
        browseable = No
        comment = Network Logon Service
        path = /home/netlogon
        guest ok = Yes
        comment = Public share (everyone has access)
        path = /home/public
        force user = pcguest
        force group = pcguest
        read only = No
        force create mode = 0666
        force directory mode = 0777
        guest ok = Yes
<extra shares snipped>
Fail to learn history-repeat it.
Fail to learn rights-lose them.
Learn both-get screwed by previous two groups.

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