Re: Event ID 40961 - DNS or WINS issue?
- From: "Ace Fekay [MVP]" <PleaseAskMe@xxxxxxxxxxxxxx>
- Date: Wed, 3 Jan 2007 09:46:10 -0500
In news:85BE1DDA-EFF5-4D1C-8A7C-306BBE9DF3E0@xxxxxxxxxxxxx,
Dominique <Dominique@xxxxxxxxxxxxxxxxxxxxxxxxx> stated, which I commented on
below:
We have a Windows 2003 Server environment with all WinXP Pro SP2
workstations. Many of them are getting event ID 40961, and have been
for over a year. The most complaint we've heard from users, is that
they cannot log onto the pc without rebooting first. I think this
problem was overlooked in the past because users were not contacting
the IT Dept when they had the problmem. They decided rebooting was
the fix. We've been getting more calls lately and so the problem has
become more apparent.
My question to you who are having this problem: Are you running WINS,
in conjunction with DNS? We have a WINS server, but none of our
workstations have it configured on their NICS. I'm just wondering if
this is a WINS issue and not DNS because all of our DNS settings seem
correct.
Event 40961's are common to not having a reverse zone, or a PTR entry for
your DCs in your cu rrent reverse zone. Create one and it will go away.
As for logon issues with AD, logon is soley based on DNS, therefore it is
more than likely and sounds like you have a classic DNS or AD domain name
misconfiguration, but difficult to tell and I would be guessing at this
point. You also mentioned that you feel the DNS settings are correct. How
so? We'll actually need to look at some config info to better help to
diagnose this.
Here are some possible causes:
1. Single label name.
2. SRV records missing.
3. Disjointed namespace.- AD domain name doesn't match the Primary DNS
Suffix and/or the zone name.
4. Using an ISP's DNS in IP properties of the DC and clients.
5. DHCP Client service disabled.
6. DC is multihomed
7. 3rd party firewalls
8. etc....
If you like to get specific help to diagnose this issue, and to elimiante
guesswork on our part, for starters, please post the following information:
1. Unedited ipconfig /all from two of your DCs, and a sample from one of
your clients..
2. The exact zone name spellng in DNS and whether updates are allowed on the
zone.
3. The AD DNS domain name as it shows up in ADUC.
4. If the SRV records exist under your zone.
5. Any other errors in the Event logs on the DC under System, Replication
Service and Directory Services (post the Event ID# and source please)
6. Dcdiag /v /fix > c:\dcdiag.txt (post the dcdiag.txt as an attachment)
7. Netdiag /v /fix > c:\netdiag.txt (post the dcdiag.txt as an attachment)
8. More than one subnet?
9. Forwarder(s) configured?
--
Ace
Innovative IT Concepts, Inc (IITCI)
Willow Grove, PA
This posting is provided "AS-IS" with no warranties or guarantees and
confers no rights.
Ace Fekay, MCSE 2003 & 2000, MCSA 2003 & 2000, MCSE+I, MCT, MVP
Microsoft MVP - Directory Services
Microsoft Certified Trainer
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