How to setup new 2012 R2 server as primary domain controller and demote 2008.

We bought a new server with 2012 R2 on it to replace a 2008 SBS server. They are both on the same subnet and  I have already made the 2012 a domain controller and AD is replicating. What are the steps to demote the 2008 server and make the 2012 the primary domain controller.?
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

StuartTechnical Architect - CloudCommented:
You need to install the 2012 r2 server as a DC in an existing domain. SBS will need to retain the FSMO roles however when you are ready to you can dcpromo the SBS server and the 2012 will become your primary. Check this out -
Scott GorcesterCTOCommented:
Its important to manually transfer the FSMO roles prior to demoting the SBS server. Manually transfer the roles and make sure to wait a bit to allow all the roles to rep;icate.

Lee W, MVPTechnology and Business Process AdvisorCommented:
First, I assume you're not using Exchange anymore.

To do this properly:
1. Perform a FULL backup on the existing server.  TWICE.  Just to be safe.
2. Run DCDIAG /C /E /V on the existing DC.  Resolve any unexplained errors.
3. Add the 2012 server to the domain.
4. Promote the 2012 server so that it is a DC in your network.
5. Wait a day and run DCDIAG /C /E /V on both servers. Resolve any unexplained errors.
6. Transfer / migrate / re-setup everything on the new server - files, printers, DHCP, etc.
7. Once everything is off the SBS server, SHUT IT DOWN.  DO NOT Demote or transfer roles.
8. If everything works fine with the SBS server off for a day, turn it back on and transfer the fsmo roles.
9. Demote the SBS Server and remove it from the network.
10. Run DCDIAG /C /E /V and confirm everything is ok.


Now, if you want an honest professional opinion, keep reading.  If not stop here.

If you do not know how to do more than 2 of the steps above, then hire a pro.  Or spend a few months setting up test labs and practicing this.  Otherwise, MAYBE it works fine... but maybe it doesn't and recovering from messing this up probably costs you a lot more in down time and consulting/repair fees.
Active Protection takes the fight to cryptojacking

While there were several headline-grabbing ransomware attacks during in 2017, another big threat started appearing at the same time that didn’t get the same coverage – illicit cryptomining.

Rakesh KapoorCommented:
There are couple of steps that you shall be taking.

1. Move all the fSMO Roles on the new Windows Server 2012, steps are given below:

2. Please ensure DNS is up and running fine on newly build Windows 2012 Domain Controller and it is pointing to itself.

3. Ensure DNS setting is correct in all the Clients

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
David AtkinTechnical DirectorCommented:
I'm going to Echo Lees comments here.
JRome225Author Commented:
I've run into an issue where the NETLOGON folder is missing on the 2012. I haven't transferred roles. I've tried restarting particular services but no NETLOGON. Any ideas?
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Windows Server 2008

From novice to tech pro — start learning today.