Can't add 2008 DC after sucessful Forest Prep & Domain Prep

mark_gould
mark_gould used Ask the Experts™
on
Afternoon,
I'm trying to add a new Server 2008 R2 DC to a single forest, single domain. Forest is 2003 Domain is 2003

I've successfully ran Forest Prep & Domain Prep (32 bit). I've checked this, even if i try and run it again it tells me its upto date.
I've added the AD role successfully. I've tried to run dcpromo and get the same error stating that I need to run Forest Prep.

I can provide screen shots if required. Anyone have any ideas?
I'm running McAfee AV which is normally an issue with Installs etc but can't imagine it would stop a DCpromo.
Thanks in advance
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You HAVE to run ADPREP from the Schema master.  Have you verified the FSMO roles and performed this task from the Schema Master?

Quoting http://www.petri.co.il/windows-server-2008-adprep.htm
ADPREP /forestprep must be run on the Schema Master of a forest and under the credentials of someone in the Schema Admins and Enterprise Admins groups.

ADPREP /domainprep must be run on the Infrastructure Master of a domain and under the credentials of someone in the Domain Admins group.

Here are some informational links for you too
http://policelli.com/blog/?p=433
http://social.technet.microsoft.com/Forums/en-US/winserverDS/thread/c436cc20-aaa8-48f7-b865-75541ba54e2c/
http://www.experts-exchange.com/Software/Server_Software/File_Servers/Active_Directory/Q_25610585.html
Mike ThomasConsultant
Top Expert 2010

Commented:
What error are you getting when you run dcpromo on the R2 server? or what happens?

Commented:
The dcpromo usually provides a detailed reason why this failed can you provide a screen shot of the error?

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Commented:
Check out steps 2, 3 and 4 of my article here: http://www.experts-exchange.com/Software/Server_Software/Email_Servers/Exchange/A_2881-Migrate-Small-Business-Server-2003-to-Exchange-2010-and-Windows-2008-R2.html

Check the IP configuration of the new server, is it using the same DNS server as the existing domain controllers?

Theere should only be internal DNS servers in the network properties.

Also I would remove the McAfee just for this procedure

Author

Commented:
Screenshot of error for reference.

The server it was run on is the both roles. Its only a small network / domain
ss1.jpg
Awarded 2009
Top Expert 2010
Commented:
Have you used ADPREP32 from the SAME DVD you installed Windows 2008 R2?
A common misconception is you need to use a 32bit DVD (which there isn't one for 2008 R2) so people try and use the non R2 version of Windows 2008.

Author

Commented:
My AD prep folder just says adprep not adprep32 so doesn't run?
Awarded 2009
Top Expert 2010

Commented:
there should definately be an ADPREP32 in there, if there isn't the chances are your looking at the wrong DVD.
Adprep without the 32 option means you are running the 64bit version - which will not work in your scenario.

Exactly what media are you using for this?

Follow this doc - it is your situation - http://smtp25.blogspot.com/2009/05/installing-windows-2008-r2-into.html

Author

Commented:
Thats correct, its the 64bit. This is why it states adprep not adprep 32. Does that mean I need to install a none 64bit server to be my DC?
Awarded 2009
Top Expert 2010
Commented:
>>Adprep without the 32 option means you are running the 64bit version - which will not work in your scenario.
WRONG!

The Windows 2008 R2 DVD has both options see attached image


adprep32.jpg
Awarded 2009
Top Expert 2010

Commented:
IF you don't see the adprep32 then it is a 32bit Disk.
Therefore it IS NOT the Windows 2008R2 DVD as there is no 32bit version of Windows 2008 R2

As I have already stated, make sure you use the same DVD that you used to install the OS.

Author

Commented:
It was an ISO image. I've just ripped it again and this time the 32 version was there. Just run the prep again & its working. Don't know why it was missing off the first one.

Many Thanks as always
Awarded 2009
Top Expert 2010

Commented:
Excellent, glad you got it sorted.

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