Unable to add a Windows Server 2008 R2 to the domain as a member server
Posted on 2011-03-04
I have just installed Windows Server 2008 R2 into a virtual session using VMWare vSphere v 4.1.0 and I can not get it to join the domain.
The server is on the 10.0.10.0 network at fixed IP 10.0.10.13. The gateway is 10.0.10.1 and is a Watchguard X750e. DNS is provided by the domain controller at 172.16.10.10. The domain controller is Windows Server 2003 R2 with 2 nics; IP addr 10.0.10.10 and 172.16.10.10.
The VM is setup as follows: IP 10.0.10.20, GW 10.0.10.1, DNS 172.16.10.10
I am able to ping both the IPs & FQDN's on both networks. I am able to access all shares on all computers on the 172.16.10.x network. Had to create a rule on the Watchguard to specifically allow SMB to get the shares to work.
I get the following error message when I try and add the 2008 server to the domain - The following error occurred attempting to join the domain "DOMAIN". The specified network name is no longer available. The Watchguard shows a deny error on microsoft-ds/tcp with a "tcp syn checking failed"
If I specify the account login info as SERVER NAME\administrator then I get "The specified username is invalid". The Watchguard does not show an error.
Considered that it might be a security issue as I had had a similar problem with Windows 7 computers accessing a Linus Samba share and changed the following in the local security policy:(Made no difference)
Network security: LAN Manager authentication level
Send LM & NTLM responses
Minimum session security for NTLM SSP
Disable Require 128-bit encryption
I am at a complete loss as to what to try next as I have added other Windows 2003 servers to different subnets and not had a problem adding them to the domain. Any suggestions would be appreciated.