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I have a small problem where one computer (a virtual machine) cannot reach the primary domain controller, but it can reach the secondary domain controllers and all other computers. The computers are on the same local network, within different ip ranges. The primary domain controller also cannot reach this computer, the other similar computers can also reach the primary domain controller without problems.

(PDC = Primary Domain controller, SDC = Secondary Domain Controller, computer 4 has the problem, computers 1 2 and 3 are similar (also VM's) but don't have a problem)

  • PDC, other server IP addresses: x.x.18.x
  • SDC's, 1, 2, 3 and 4 IP addresses: x.x.15.x
  • Subnetmasks are and computer 4 can reach all other servers at x.x.18.x.

Computers 1, 2 and 3 are on a second secondary network, computer 4 is not on it but neither are the PDC's and SDC's.

I have checked for MAC address conflicts, firewall settings, I disabled secondary networks, but nothing works and I'm out of ideas. Anyone have an idea what could be wrong?

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Note that computer 4 has successfully entered the domain via the secondary domain controllers. –  Pjotr Slump Feb 18 '14 at 12:54

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