Solved

Can't promote Windows 2012 Server in 2008 domain

Posted on 2014-10-23
5
159 Views
Last Modified: 2014-10-28
I just joined a new Windows 2012 Server to a 2008 Domain.

I want to promote it to Domain Controller but the wizard gives me some errors.

I've investigated further and I get this error with adprep /rodcprep (with elevated privileges):

Adprep could not contact the Naming FSMO myserver.mydomain.com The Naming FSMO must be reachable for this operation proceed.

Error code: 0x3a

I am trying to do this logged as Domain Admin and I've checked Netdom Query FSMO on both the new server and the main server:

All the entries point to the same server: myserver.mydomain.com on both sides (new server and main)

The new server has not the DNS sever role and has as single dns server the main server.

What is wrong?

How can I fix this?

Thanks
0
Comment
Question by:ltpitt
  • 3
  • 2
5 Comments
 
LVL 1

Expert Comment

by:Kamran Mallik
ID: 40399334
Are you trying to promote this DC as a Read Only Domain Controller as the command you have entered is to promote it to a Read only Domain Controller.
0
 
LVL 1

Author Comment

by:ltpitt
ID: 40399399
Sorry I've now done on both Master server and new server:

adprep /domainprep

and on the master server I get: "All the domain level information are already updated" and on the new server: "Adprep could not contact the Naming FSMO myserver.mydomain.com The Naming FSMO must be reachable for this operation proceed.

Error code: 0x3a"
0
 
LVL 1

Expert Comment

by:Kamran Mallik
ID: 40399468
Have you tried running dcpromo from the run menu instead. Domainprep I don't think is used to install a second DC on an existing domain. I usually use dcpromo which will run adprep anyway if needed.
0
 
LVL 1

Accepted Solution

by:
ltpitt earned 0 total points
ID: 40399512
Solved!

It was just a firewall issue: damn me!

dcdiag /s:myservername

gave all the errors in the world and then I understood and fixed the pfsense firewall :)
0
 
LVL 1

Author Closing Comment

by:ltpitt
ID: 40408006
It was simply that
0

Join & Write a Comment

OfficeMate Freezes on login or does not load after login credentials are input.
Is your Office 365 signature not working the way you want it to? Are signature updates taking up too much of your time? Let's run through the most common problems that an IT administrator can encounter when dealing with Office 365 email signatures.
In this Micro Tutorial viewers will learn how to restore their server from Bare Metal Backup image created with Windows Server Backup feature. As an example Windows 2012R2 is used.
This tutorial will walk an individual through the process of installing the necessary services and then configuring a Windows Server 2012 system as an iSCSI target. To install the necessary roles, go to Server Manager, and select Add Roles and Featu…

758 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

20 Experts available now in Live!

Get 1:1 Help Now