I am receiving the following error on all member machines in my domain.
"Windows cannot obtain the domain controller name for your computer network. (An unexpected network error occurred. ). Group Policy processing aborted. "
Additionally, I am not able to ping the Domain Controller from any of these machines, although I can ping the other way.
My setup is as follows:
Single Domain Controller: Dell PowerEdge R710, Dual Intel Quad Core, 24GB RAM
Windows Server 2008 Service Pack 2
Windows Firewall is enabled with exceptions
Trend Micro WorryFree Business Security Advanced is installed
Windows Server 2003 and 2008 SP2, various roles
Windows XP SP3
Here is what I have attempted:
1. Removed a machine from the domain and then re-added it back. The Event ID's still existed and I was still unable to ping the DC.
2. Confirmed that the DNS settings are correct
3. I ran DCDIAG on the DC, and all tests passed, although it is complaining thatI have too few addresses available in my DHCP scope