Netlogon Server doesn't start

[Lanwench]

HI, I’m running a Windows Server 2003 Standard Edition R2 with Service Pack 1. It has only one DC running. Don’t know why suddenly my Netlogon stopped working and is not starting anymore. Due to this my entire domain is down. I tried searching web for some help but dint found anything helpful. Hope you guys can help me out with this.

Here is what I found listed in the Event Log:

event log
Application
Userenv ID 1053
Can't determine computer's role (specified user does not exists).

Syetm
Nelogon ID 5602
erro accessinf local computer or network

Directory Service
NTDS General ID 1126
Can't contact the global catalog

DNS
No errors
In my DBS forward lookup zone I see only the A record of my server (and not
the records of the several client)

And here is the netlogon log:

07/13 10:55:16 [SESSION] NlCheckServerSession: SEGRETERIA2: Added NT BDC
account
07/13 10:55:19 [MISC] Added the 0x1B name on transport
\Device\NetBT_Tcpip_{6ADA4C65-2827-4B37-88F1-84FF14153A82}
07/13 10:55:19 [CRITICAL] NetpDcGetDcNext:
_ldap._tcp.pdc._msdcs.galassiregni.: Cannot Query DNS. 1460 0x5b4
07/13 10:55:19 [CRITICAL] NetpDcGetNameIp: galassiregni.: No data returned
from DnsQuery.
07/13 10:55:19 [MAILSLOT] Sent 'Primary Query' message to GALASSIREGNI[1B]
on all transports.
07/13 10:55:27 [MAILSLOT] Sent 'Primary Query' message to GALASSIREGNI[1B]
on all transports.
07/13 10:55:27 [MAILSLOT] Sent 'Primary Query' message to GALASSIREGNI[1C]
on all transports.
07/13 10:55:34 [DOMAIN] Setting this machine to be a PDC that replicates to
NT 4 BDCs
07/13 10:55:34 [SYNC] NlInitDbSerialNumber: SAM: Serial number is 0 13c
07/13 10:55:34 [SYNC] NlInitDbSerialNumber: BUILTIN: Serial number is 0 2f
07/13 10:55:34 [SYNC] NlInitDbSerialNumber: LSA: Serial number is 0 14
07/13 10:55:34 [CRITICAL] Cannot NlSamOpenNamedUser 0xc0000064
07/13 10:55:34 [MISC] NlExit: Netlogon exiting 5602 0x15e2 Data: 3221225572
0xc0000064
07/13 10:55:34 [MISC] Eventlog: 5602 (1) 0xc0000064 c0000064 d...
07/13 10:55:34 [DOMAIN] NlDeleteDomain called
07/13 10:55:34 [DOMAIN] Domain RefCount is zero. Domain being rundown.
07/13 10:55:34 [SESSION] NlFreeServerSession: SEGRETERIA2: Freed server
session
07/13 10:55:34 [SITE] Setting site name to '(null)'

Somebody please help me to get out of this.

[Oshea]

Before I could I suggest a proper solution, I must know the proper cause of this problem. So, did you made any changes in the server just before its failure such as Windows Update or such things? Also how did you lose the dc in the first place? Until youi reply these questions, just give this a try.

Open command prompt, enter netdiag /fix. See if running command can repopulate the dns records for your dc. Apart from this also try to run diagnostics against your Active Directory domain. See if it works. Let me know the results with answer for the questions I asked you above.

[Lanwench]

Thank you very much for your help Oshea. As you suggested, i ran the netdiag and following is the output (only errors)

[FATAL] File \config\netlogon.dns contains invalid DNS entries.
[FATAL] No DNS servers have the DNS records for this DC registered.

DNS test . . . . . . . . . . . . . : Failed
Interface {6ADA4C65-2827-4B37-88F1-84FF14153A82}
DNS Domain:
DNS Servers: 10.10.1.12
IP Address: Expected registration with PDN (primary DNS
domain name):
Hostname: server.galassiregni.
Authoritative zone: galassiregni.
Primary DNS server: server.galassiregni 10.10.1.12
Authoritative NS:10.10.1.12
Check the DNS registration for DCs entries on DNS server '10.10.1.12'
[FATAL] File \config\netlogon.dns contains invalid DNS entries.
[FATAL] No DNS servers have the DNS records for this DC registered.

DC discovery test. . . . . . . . . : Failed

Find DC in domain 'GALASSIREGNI':
[FATAL] Cannot find DC in domain 'GALASSIREGNI'.
[ERROR_NO_SUCH_DOMAIN]

DC list test . . . . . . . . . . . : Failed
'GALASSIREGNI': Cannot find DC to get DC list from [test skipped].
List of DCs in Domain 'GALASSIREGNI':

LDAP test. . . . . . . . . . . . . : Failed
Cannot find DC to run LDAP tests on. The error occurred was: The
specified domain does not exists or it is unreachable


What now? Please help.

[Patter-Son]

Well, according to your test and results, to me it probably appears as DNS issue. Where is your DNS server located? If the DC is also set as DNS server then just make sure that your DNS server is installed. Also make sure that server NIC primary DNS is pointing to the server itself. Note, DNS must have Domain Forward Zone configured.