Sunday, July 24, 2016

windows server 2008 - DC1 Can't See DC2 Nor Network Machines Can't See Domain

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.

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