When you made your IP change did you update your DNS records to show your reverse pointer for the new IP address ?
This error sounds like the workstations cannot find the GPO and so thats why this error gets thrown.
Main Topics
Browse All Topics
Loading Advertisement...
Question
Changed DC IP now XP Clients throw errors 40960 + 40961
Hi,
Ive just changed over the IPs on my DCs to a new subnet. Now my XP clients report eventID errors 40960 and 40961 when logging on. Basically they are aborting domain processing and logging on with cached credentials. They also take an age to log on. I can ping the DCs (with AD integrated DNS) from the clients but cant resolve hostnames. My member servers can resolve names and log on properly. So can one or two XP clients but the rest cant. Ive check the difference between the machines that cant and the machines that can are there dont seem to be any.
I reinstalled my DNS which didnt help. Ive removed machines from the domain and put them back in and no luck. I desperately need to sort this out for Monday&. Any ideas?
This Question has been solved and asker verified All Experts Exchange premium technology solutions are available to subscription members.
Subscribe now for full access to Experts Exchange and get
Instant Access to this Solution
- Plus...
- 30 Day FREE access, no risk, no obligation
- Collaborate with the world's top tech experts
- Unlimited access to our exclusive solution database
- Never be left without tech help again
Trusted by hundreds of thousands everyday for fast, accurate and reliable tech support.
- "The time we save is the biggest benefit of Experts Exchange to Warner Bros. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange." Mike Kapnisakis, Warner Bros.
- "Our team likes having a resource that is more secure than just using Google and most experts using this service really know their stuff. It's nice to look here first versus using Google." Dayna Sellner, Lockheed Martin
- "Anytime that I've been stumped with a problem, 9 out of 10 times Experts Exchange has either the accepted solution or an open discussion of the potential solution to the problem." Kenny Red, eBay Inc.
See what Experts Exchange can do for you.
Got a question?
We've got the answer.
Experts Exchange has been collecting answers to technology questions since 1996…3 million and counting! If you have a question, chances are we already have your answer.
Need individual assistance?
Our experts are ready to help.
If you can't find the exact answer you're looking for, ask our exclusive community of 50,000 experts. You’ll get a personalized answer from a trusted professional.
Want to learn from the best?
Read articles from industry experts.
Thousands of free tech tips, tricks, how-to’s and tutorials are available in our peer reviewed articles section. See for yourself how smart our experts are, no login required.
Working on a long term project?
Store your work and research.
Save solutions to your questions, answers you’ve discovered through searching plus helpful articles in your personal knowledgebase for easy future access.
Access the answers to your technology questions today.
30-day free trial. Register in 60 seconds.
What Makes Experts Exchange Unique?
Members of the expert community talk about why the experience at Experts Exchange is different than what you will find anywhere else.
Trusted by the world's most respected brands.
Faithfully serving IT professionals since 1996.
Try it out and discover for yourself.
30-day free trial. Register in 60 seconds.
Free Tech Articles
-
WARNING: 5 Reasons why you should NEVER fix a computer for free.
It is in our nature to love the puzzle. We are obsessed. The lot of us. We love puzzles. We love the challenge. We thrive on finding the answer. We hate disarray. It bothers us deep in our soul. W...
-
SCCM OSD Basic troubleshooting
SCCM 2007 OSD is a fantastic way to deploy operating systems, however, like most things SCCM issues can sometimes be difficult to resolve due to the sheer volume of logs to sift through and the dispe...
-
Migrate Small Business Server 2003 to Exchange 2010 and Windows 2008 R2
This guide is intended to provide step by step instructions on how to migrate from Small Business Server 2003 to Windows 2008 R2 with Exchange 2010. For this migration to work you will need the fo...
-
Create a Win7 Gadget
This article shows you how to create a simple "Gadget" -- a sort of mini-application supported by Windows 7 and Vista. Gadgets can be dropped anywhere on the desktop to provide instant information, ...
-
Outlook continually prompting for username and password
There have been a lot of questions recently regarding Outlook prompting for a username and password whilst using Exchange 2007. There are a few reasons why this would happen and I will try to cover t...
-
Backup Exchange 2010 Information Store using Windows Backup
There seems to be quite a lot of confusion around the ability to backup Exchange 2010 using the built in Windows Backup feature. This stems from the omission of this feature prior to Exchange 2007 s...
Cloud Class Webinars
- Avoiding Bugs in Microsoft Access
Alison Balter takes and in-depth look at avoiding bugs in Access. In this webinar you will learn about using the immediate window to debug your applications, invoking the debugger, using breakpoints to troubleshoot, stepping through code, setting the next statement to execute, ...
- Top 10 Best New Features in Visio 2010
Scott Helmers gives live demonstrations of the top 10 new features in Visio 2010. This webinar will teach you how to create compelling diagrams by adding shapes to the page with a single click, linking the shapes in a diagram to data in Excel (or SQL Server, or SharePoint), ...
- IT Consultant Business Secrets Revealed
Michael Munger, Experts Exchange tech pro and IT consultant, pulls back the curtain on his very successful businesses and answers question on every IT consultant and business owner should know about. He shares secrets on what he did to solve the 5 most common problems in IT, ...
- Disaster Recovery and Business Continuity
Quest CTO, Mike Billon, gives an overview of the steps involved in building a dunamic disaster recovery plan. Through case studies and an examination of software/hardware tooles for monitoring and testing, you'll gain a better understandin of where you are, where you want ...
- Organize Your Visio Diagrams with Containers and Lists
Scott Helmers uses cross functional flowcharts, wireframe diagrams, data graphic legends and seating charts to teach you: how to ustilize all three new structured diagram components in Visio 2010, the best practices for organizeing shapes in previous version of Visio, how to organize ...
- How to Us Objects, Properties, Events and Methods in Microsoft Access
Alison Dalter gives an in-depbth look at objects, properties, events and methods in Microsoft Access. In this webinar you will learn about using the object browser, referring to objects, working with properties and methods, working with object variables, understanding the ...
Join the Community
Give a Little. Get a Lot.
Join the community of experts here and help other tech pros by answering question in your area of expertise. You can earn FREE access to all Experts Exchange's premium features and resources.
Answers
The problem is definitely DNs related if you resolve all steps shown above do a dns flush run netdiag and b4 all else ensure the workstations are getting dns from a machine that can read the addresses of the servers you should have no isses are you getting IP's and DNS from a DHCP server if so are you having any probs with this server reading the doman controller.
From the machies that aren't happy i cant ping either my domain (xyz.co.uk) or a dc by name (server01.xyz.co.uk) With my dns i did amend the records for my dc and the pointers. All my clients have their DNS settings pointing to my DCs. I'm not using DHCP.
I've tried 25 clients so far and only two are working, even though they take an asge to load. Thanks for the replies.
I will point you to a resource that will help you to resolve this as the issues can be broad ranging from time sync to svc issues etc.
http://www.eventid.net/dis
give it a good read you should come out with a resolution.
This all has to do with changing the server maybe resetting the machine account or password might do the trick but do give it a read none the less it will leave you with more resources to handle future issues.
Thanks for the replies, I have thoroughly read the document that becraig pointed me to, and i have tried some proposed solutions non of which have really helped. Namely making sure there are no time sync issues and re-applying 2000 SP4 and demoting and promoting DCs.
I have now put one DC back on to its old IP/subnet and all clients are happily connecting, I've left the other in the new subnet and amending AD sites & services accordingly and both DCs are replicating. I did one last thing and tried to ping my domain name from my DCs. Both replies with the wrong IPs. My old network was class C and looked like this:
1st DC: 192.168.1.6
2nd DC: 192.168.1.5
I then moved them to 10.1.4.1 and 10.1.4.2 respectively. When they were in the new network and it tried to ping my domain name the results were thus: 10.1.4.1 resolved the domain to 192.168.1.6 and couldnt reach it and 10.1.4.2 resolved to 192.168.1.5 and also couldnt reach it. This must indicate DNS.
Strangely one of the XP clients that was working resolved the domain name to 10.1.4.1 correctly all other clients couldnt resolve the name at all.
I have already chnaged the IP address of both my DCs and amended the DNS records last saturday, even so my clients still resolve the domain name to the wrong IPs. I also flushed the dns from my clients. Where/is there is the DNS record for the domain name e.g. xyz.com, i can't see it in my DNS settings?
Okay, Ive fixed my own problem and thought Id post up the solution just in case others find themselves in a similar boat.
Problem:
When I moved my server over to their new IPs most of my XP boxes wouldnt log on, some would, most wouldnt. Using nslookup on my clients reported the old IPs of my DCs and no matter what settings I used/typed in on the client. Really frustrating
Solution:
When I moved my DCs I didnt properly investigate the current policies on my DCs.
My Workstations policy (affecting all my users) had the setting: Computer Configuration > Administrative Templates > Network > DNS Client > DNS Servers configured to the old IPs of my DCs. This setting automatically overrides the DNS settings in the properties of the network connection.
Since my clients couldnt log on to the domain they used the cached information theyd collected. I rectified this by amending the registry setting that the policy created to the new DC IPs and rebooted. My clients could then log on. However as soon as a policy refresh was applied the old settings, reflected in the registry, were back. This clearly indicated a policy problem, I scoured Group Policy, found the setting and promptly disabled it. I must have made this setting about two years ago and plain forgot. DOH!
Well, a lesson well learnt. Dont use policies for network connections unless you write down the fu**ing settings so as remember what youve done!!!!! Thanks for the responses. This question can now be closed.
3 Ways to Join
Business Accounts
- Perfect for organizations
- Multiple users
- Save over 36%
- Create a Business Account
Answer for Membership
- Earn free access
- Showcase your knowledge
- No credit card required
- Sign Up to Answer
Loading Advertisement...
by: ashutosh_kumarPosted on 2007-09-23 at 05:59:14ID: 19944194
from the xp machine try to ping your domain name...suppose your domain is xyz.com and the dc's name is server01.xyz.com
then
ping xyz.com
it should show the IP of some DC
if this is fine, then there is problem at DC, try restarting the NetLogon Service, then run this command on the DC
netdiag /fix
this will fix DNS issues if any