Using Windows Server 2008 R2
Found an issue with my Domain Controller 1. Setup is basic and the main domain controller is hosting AD and DNS. The secondary cannot find the primary.
dcgetdcname failed error 1355
As well as computers that are on the domain show the network as Unidentified Network
DC1 shows the correct domain it is connected to and working correctly. DCDIAG on the DC1 shows everything running correctly. DC1 can also ping domain joined computers without a problem but cannot ping DC2.
DC2 also is the backup AD and DNS.
Googled everything under the sun but I can't get DC2 to see DC1 and the computers on the network to see the domain name correctly. I can't join computers to domain either as it says it cannot find the domain.
I can remote to the DC1 from any domain joined computer without a problem but I can't get to any fileshares on the DC1 either. Neither of the DCs are running NAT. This network is not internet joined.
Can anyone help?
EDIT1: NSLOOKUP cannot find the DNS servers. They time out.
EDIT2: DC1 and DC2 are using themselves as the DNS servers as they are marked as secondary's because they cannot reach each other to register each other as DNS servers for each other.
EDIT3: Update got DNS working only not sure how but now no computers on the network can reach the fileshares on the server itself. Firewalls are disabled and I can't find any issue with reaching them.
Best Answer
My first guess is that you have routing or numbering issues. Check the IP addresses of the servers and ensure that they are getting them from DHCP. If the DCs are not on the same subnet, there needs to be a router in between them (if only a router on a stick). Check that they can actually ping one another. Check that firewalls, local and network, are not restricting necessary traffic like RPC and DNS.
From what you've posted, it really just looks like DC2 doesn't have a working network connection or lacks a route to and from DC1.