Avatar of emtechadmin
Flag for United Arab Emirates asked on

Domain Migration Issues

Hi Experts,

I have done a domain migration from windows 2003 to win 2008 R2 (transferred all the roles ), after two day when I tried to shut down the 2003 server (current ADC) the main DC Server 2008's Active directory and DNS crashes also at that time my users will not be able to access the internet (connection status: connected, then I had to give static ISP DNS ). I also got an error message the pdc is not responding.
  Again I had to switch on the 2003 server and restated 2008 server my PDC then only it worked.
But my netdome fsmo query shows the new server 2008. also dns is resolving.

I did dcdiag

Kindly advice

Active Directory

Avatar of undefined
Last Comment

8/22/2022 - Mon

You configured DNS forwarders on your new DC?

This SBS or standard server?  On our SBS migration, I had to run DCPROMO and remove the old 2003 DC before the new one actually took over.  

Also, are you sure all 4 FSMO roles have been transferred?


I opened DNS of the new server right clicked in the forwarders tap I tried to add the IP of the new DC it is not accepting showing invalid. But it has the IP address of the old Dc ie current ADC. also ISP dns

This is the best money I have ever spent. I cannot not tell you how many times these folks have saved my bacon. I learn so much from the contributors.
Preston Grant

Ideally your new 2K8R2 DC should be using itself for DNS lookups, is that the case or is it pointing to your old 2K3 server?
Also there should be some type of error in the event log when that type of failure occurred

hi jleyse,

It is 2003 std and not sbs....

yea  all the roles have been transferred.


Do you have DHCP correctly configured on the 2008 machine?  Does it show any leases?
Get an unlimited membership to EE for less than $4 a week.
Unlimited question asking, solutions, articles and more.

Log in or sign up to see answer
Become an EE member today7-DAY FREE TRIAL
Members can start a 7-Day Free trial then enjoy unlimited access to the platform
Sign up - Free for 7 days
Learn why we charge membership fees
We get it - no one likes a content blocker. Take one extra minute and find out why we block content.
Not exactly the question you had in mind?
Sign up for an EE membership and get your own personalized solution. With an EE membership, you can ask unlimited troubleshooting, research, or opinion questions.
ask a question

I can't help you much with the DHCP / NPS setup, but that is most likely the problem.  If your DHCP service isn't working properly, your clients are probably still pulling from the old server, which is probably still setup to use itself as the DNS.  That's why your clients freak out when the old 2003 server isn't online.  

Get the 2008 DHCP service running and that will probably fix your problems.  Sorry I can't help any more.

I was able to isolate the error to DHCP and was able ti identify the correct issue