Solved

dcpromo - can't promote new 2008 R2 server to DC

Posted on 2010-09-01
8
1,072 Views
Last Modified: 2012-05-10
I currently have 2 DC's, one is Server 2k8 (32-bit), the other is Server 2k8 - 64 bit.  I am ready to retire the 32-bit DC, so I installed another Server, 2K8 R2 and am trying to promote it.  When I do, I get the error that I must first run adprep /forestprep on the FSMO host.  But my Domain functional level is already 2008, so shouldn't the forest already be ready for another 2K8 DC?  I am hesitant to run adprep unless I am sure it's the correct move.   I could use some guidance here.  Thanks
0
Comment
Question by:dvanaken
8 Comments
 
LVL 57

Accepted Solution

by:
Mike Kline earned 300 total points
ID: 33580226
Since you are using 2008 R2 you need a schema update.  

Is the box that holds your schema master x32 or x64

There are two versions of adprep in 2008 R2

adprep32 (for x32)
adprep (for x64)

Jon has a blog on that here  http://policelli.com/blog/?p=433#more-433

Thanks
Mike
0
 
LVL 57

Expert Comment

by:Mike Kline
ID: 33580234
by the way you can quickly find your schema version using adfind from MVP Joe Richards

adfind -sc schver


Schema versions =
13 = windows 2000
30 = windows 2003
31 = windows 2003 R2
44 = windows 2008
47 = windows 2008 R2


Thanks
Mike
0
 
LVL 95

Expert Comment

by:Lee W, MVP
ID: 33580241
Server 2008 R2 is NOT the same as Server 2008 - you have to do what the message says and upgrade the Schema - there is a folder on the DVD with ADPREP...
0
 

Author Comment

by:dvanaken
ID: 33580242
All FSMO roles are on the 64-bit DC.  Should I go ahead and run adprep /forestprep on that box?
0
PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

 
LVL 3

Assisted Solution

by:insightcomputing
insightcomputing earned 200 total points
ID: 33580243
Runt he following TWO commands within the windows server 2008 cmd prompt:

ADPREP /forestprep

ADPREP /domainprep


Put your windows 2008 R2 64 bit disc into your old server, browse to the ADprep folder on the disc. Run the ADprep 64 bit version on your 2003 server (im assuming you have 2003 server) this will take some time, after it is finished, it may want a reboot. Reboot the server and then try to DC promo the machine again and let me know what happens.
0
 
LVL 57

Expert Comment

by:Mike Kline
ID: 33580264
All FSMO roles are on the 64-bit DC.  Should I go ahead and run adprep /forestprep on that box?

-- yes
0
 

Author Comment

by:dvanaken
ID: 33580366
Schema is happily converting from 44 to 47.  I'm not clear - do I need to run adprep /domainprep /gpprep as well?
0
 

Author Closing Comment

by:dvanaken
ID: 33580788
Thanks guys - much appreciated.
0

Featured Post

Ransomware-A Revenue Bonanza for Service Providers

Ransomware – malware that gets on your customers’ computers, encrypts their data, and extorts a hefty ransom for the decryption keys – is a surging new threat.  The purpose of this eBook is to educate the reader about ransomware attacks.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In this article, we will see the basic design consideration while designing a Multi-tenant web application in a simple manner. Though, many frameworks are available in the market to develop a multi - tenant application, but do they provide data, cod…
Restoring deleted objects in Active Directory has been a standard feature in Active Directory for many years, yet some admins may not know what is available.
This tutorial will show how to push an installation of Backup Exec to an additional server in both 2012 and 2014 versions of the software. Click on the Backup Exec button in the upper left corner. From here, select Installation and Licensing, then I…
This tutorial will walk an individual through the steps necessary to install and configure the Windows Server Backup Utility. Directly connect an external storage device such as a USB drive, or CD\DVD burner: If the device is a USB drive, ensure i…

911 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

22 Experts available now in Live!

Get 1:1 Help Now