Re: <forestroot> folder deleted

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Hi Ace,

The _msdcs.mydomain.local is not missing. Only the mydomain.local zones and the SRV folders are missing ...
mydomain.local has been manually deleted.

There is only one DC into the domain
Ths OS version is 2003RS SP2
The ISP's DSN addresses are not in my DC which is multihomed (but it can be turned off).
There is no more than one domain in the forest.
The zone is not single label

I have already saved netlogon.dns|dnd|ftl (no .bak found) from the system32/config folder


Configuration IP de Windows
Nom de l'hôte . . . . . . . . . . : RootDC
Suffixe DNS principal . . . . . . : mydomain.local
Type de nœud . . . . . . . . . . : Inconnu
Routage IP activé . . . . . . . . : Oui
Proxy WINS activé . . . . . . . . : Non
Liste de recherche du suffixe DNS.: mydomain.local

Carte PPP Interface (numérotation entrante) de serveur RAS :
Suffixe DNS propre à la connexion :
Description . . . . . . . . . . . : WAN (PPP/SLIP) Interface
Adresse physique . . . . . . . . . : 00-53-45-00-00-00
DHCP activé. . . . . . . . . . . . : Non
Adresse IP. . . . . . . . . . . . : 192.168.10.175
Masque de sous-réseau . . . . . . : 255.255.255.255
Passerelle par défaut . . . . . . :

Carte Ethernet caraxlan221 :
Suffixe DNS propre à la connexion :
Description . . . . . . . . . . . : Broadcom BCM5708C NetXtreme II GigE (NDIS VBD Client) #2
Adresse physique . . . . . . . . . : 00-1C-23-D2-AA-C6
DHCP activé. . . . . . . . . . . . : Non
Adresse IP. . . . . . . . . . . . : 192.168.10.221
Masque de sous-réseau . . . . . . : 255.255.255.0
Passerelle par défaut . . . . . . : 192.168.10.1
Serveurs DNS . . . . . . . . . . : 192.168.10.221
NetBIOS sur TCPIP. . . . . . . . : Désactivé

Carte Ethernet caraxlan100 :
Suffixe DNS propre à la connexion :
Description . . . . . . . . . . . : Broadcom BCM5708C NetXtreme II GigE (NDIS VBD Client)
Adresse physique . . . . . . . . . : 00-1C-23-D2-AA-C4
DHCP activé. . . . . . . . . . . . : Non
Adresse IP. . . . . . . . . . . . : 192.168.10.100
Masque de sous-réseau . . . . . . : 255.255.255.0
Passerelle par défaut . . . . . . : 192.168.10.1
Serveurs DNS . . . . . . . . . . : 192.168.10.221
NetBIOS sur TCPIP. . . . . . . . : Désactivé


Thanks for your advices Ace.

Interesting. So you mean the _msdcs.yorudomain.com, and the yourdomain.com zones, and the SRV folders (_udp, _sites, __tcp) are all missing?

Without additional information instead of just the symptoms, it will be difficult to diagnose other than generalized possibilities.

Normally yes, restarting netlogon will fix it. Another more specific method is to rename the netlogon.bak and netlogon.dns files in the system32\config folder, then running an ipconfig /registerdns, then restarting the netlogon, will usually fix it. But there are rules behind this, such as the Primary DNS suffix must match the zOne name in DNS that is allowing updates, which must match the AD DNS domain name, which must NOT be a single label name, and you are NOT using your ISP's DNS server, otherwise none of this will work.

What was last changed prior to this occuring? Was a DC perhaps promoted into the domain, DNS installed on it, and someone manually created the yourdomain.com zone on it and didn't allow replication to populate it? If so, that would definitely remove the zone.

Also if someone mnaually created a AD integrated zone with a different replication zone on that DC, then that would have created a dupe zone scenario, which may cause the same thing.

If you have your ISP's DNS addresses in your DCs, or if the yourdomain.com zone is single label (such as yourdomain without the com, local, etc), that will cause it too.

If the DC is multihomed (more than one NIC), it may contribute to it (multihomed DCs are problematic at best).

If you can post the following, it will be helpful for more specific ideas of diagnosing this.

Unedited ipconfig /all of two DCs.
What was recently changed?
Multiple administrators?
MOre than one domain in the forest?
Operating system version and service pack level.

That should be good for starters.

.

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