I am running Ubuntu Server 14.04. I have tried numerous Samba config files with no success in having Windows 7 & 8 machines join the Samba domain. Using the Official Samba 3 HowTo Guide, page 49, I stripped my smb.conf file to bare bones.

Here is my smb.conf file content.

# Global parameters
[global]
    netbios name = FRANK-N-STEIN
    workgroup = TUX-NET
##  passdb backend = tbdsam
#   os level = 33
#   preferred master = yes
#   local master = yes
    domain master = yes
    security = user
    domain logons = yes
#   logon path = \\%N\profiles\%u

When I try to join from Windows, I get this message: "The specified domain either does not exist or could not be contacted."

However, I searched the web and discovered a Windows built-in procedure which locates domain controllers on a local network.

To use it:

  1. Open Windows terminal screen
  2. (2) Change directory to Users\Administrator "cd C:\Users\Administrator
  3. Enter at the command prompt nltest /dcname:{name of domain}

On my Windows machines, they quickly find my domain controller, "FRANK-N-STEIN".

Can someone help me? The nltest utility finds the domain controller but the Widows connect to a domain function can't seem to find it. I really need to get a basic domain in operation using Ubuntu server 14.04.

For an NT4 domain run by Samba 3 you need to specify:

security = domain

And create a UNIX user so you can login using it from Windows.

In the other hand, you need to use Samba 4 so your Windows 7 and Windows 8 computers can join an Active Directory Domain Controller run by Samba.

Here is the howto: http://wiki.samba.org/index.php/Samba_AD_DC_HOWTO

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