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Old 04-22-2013, 02:24 AM   #1
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Registered: Apr 2013
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The system cannot log you on now because the domain is not available

I am using two virtualbox machines, one running XUbuntu 12.4 LTs and the other running a Windows XP as a testbed for implementing a Samba-based domain. The Linux machine is my PDC and the XP machine is the client. Samba uses LDAP as a backend.

The installation is almost successful and I managed to join my XP machine to the domain. Nevertheless when I try to log in using an existing user, I receive the following error in the Welcome screen:

The system cannot log you on now because the domain is not available
As I said before, the server and the client are both running on two virtualbox machines. After the installation of my server and joining the network, I can ping each machine from the other.

Samba version is 3.6.3

Does anyone have any idea what might be the problem? Do I need a gateway or DNS address? I am totally running out of ideas (

I examined the messages exchanged between the two machines including TCP, SMB, NBNS and BROWSER but two caught my attention:

SMB session setup andx response ntlmssp_challenge error status_more_processing_required

TCP iad2 > netbios-ssn [RST, ACK] Seq=73 Ack=1 Win=0 Len=0 
Old 04-22-2013, 07:05 AM   #2
Registered: Feb 2008
Distribution: Fedora,RHEL,Ubuntu
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If possible please share your smb conf. You dont need DNS but WINS support can added in smb conf . You require gateway only your PDC/BDC are in separate network.
Old 04-23-2013, 06:46 AM   #3
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Thank you very much. The problem is solved now. It was actually, as you expected, in smb.conf. I had to set "server signing" to "NO" rather than "auto" since in new versions of Samba, it works only like this for Windows clients.


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