SBS 2011 - joining client machines to domain - failed

New SBS 2011 server, 5 new Windows 7 Professional workstations.  All workstations are similar (not exact), all have static IP addressess with the DNS IP pointing to the domain server (

3 of the workstations connected to the SBS 2011 server without any problems using the client connect wizard located at:  http://connect

2 of the workstations will not connect to the server with the wizard or manually by attempting to join the domain.

When attempting to join manually, I receive the following error information:

DNS was successfully queried for the service location (SRV) resource record used to
locate a domain controller for domain "svrexpb.explorers.local":

The query was for the SRV record for _ldap._tcp.dc._msdcs.svrexpb.explorers.local

The following domain controllers were identified by the query:

However no domain controllers could be contacted.


1. Pinging by name or IP works fine.

2. \\svrexpb.explorers.local - WILL show me the shared files AND SYSVOL AND NETLOGON are available

I have not been able to figure out why these two machines will not join the domain.

Adam DIT Solutions DeveloperAsked:
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change the pcs to a different workgroup name and alter their hostnames - reboot - try again

Adam DIT Solutions DeveloperAuthor Commented:
Thanks for the suggestion, unfortunately it did not work.

Other thoughts? :)
any thirdparty software on the pcs? (AV, firewall)
try disabling windows firewall for private, public and domain under the control panel.

are these OEM pre-installed pcs or did you install win7 manually? if OEM: if possible try reinstalling windows on one pc and try again

//edit: try changing from static ip to dynamic IP - maybe this makes a difference

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Adam DIT Solutions DeveloperAuthor Commented:
Yes, all machines have AV and firewall.  Firewall was disabled (domain not an option since it is not joined to a domain).  The other three, with the same setup and active AV did not have a problem.

OEM installed - additional software installed so I cannot wipe and reinstall at this time.

Could try DHCP and see if it makes a difference but I doubt it since the IP addressing would be the same with the possible difference of the workstation's IP address.
Adam DIT Solutions DeveloperAuthor Commented:
While this doesn't make sense it did work.  All 5 workstations have the exact same AV installed and setup.  2 of the workstations would not connect but if I disabled AV it connected and joined the domain without issue.

Restarting machines now and will see if AV causing problems maintaining connection.

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