Hi all,

I have read through a lots of online tutorials / guides regarding adding win 2012 R2 to Win 2003 domain before we start.

unfortunately this is not an easy task in our environment. when it gets to ADPREP check, it shows "The RPC server is unavailable." error.

- Existing DC is running on 2003 R2, Domain functional level is on 2003.

- Domain firewall is off.

- Existing DC 1 has got Exchange 2007 on it. (2003R2 -64 bit)

- Existing DC 2 as file server. (2003R2 -64 bit)

Any thoughts?

thanks

Gary

error log:

-------------------------------------------------------------------------

[2015/04/27:14:04:33.896]
Adprep could not retrieve data from the server server01.AD.local through Windows Managment Instrumentation (WMI).

[User Action]

Check the log file ADPrep.log in the C:\Windows\debug\adprep\logs\20150427140432-test directory for possible cause of failure.
[2015/04/27:14:04:33.896]
Adprep encountered a Win32 error. 

Error code: 0x6ba Error message: The RPC server is unavailable.


DSID Info:
DSID: 0x1810012a
HRESULT = 0x800706ba
NT BUILD: 9600
NT BUILD: 16384

[2015/04/27:14:04:33.896]
Adprep failed while performing Exchange schema check.

[Status/Consequence]

The Active Directory Domain Services schema is not upgraded.

[User Action]

Check the log file ADPrep.log in the C:\Windows\debug\adprep\logs\20150427140432-test directory for possible cause of failure.
[2015/04/27:14:04:33.896]
Adprep encountered a Win32 error. 

Error code: 0x6ba Error message: The RPC server is unavailable.


DSID Info:
DSID: 0x1810012a
HRESULT = 0x800706ba
NT BUILD: 9600
NT BUILD: 16384

----------------------------------------------------------------------------------------------

A bit more information, i have also checked the kb ( https://support.microsoft.com/en-us/kb/2737560/ ) and didn't help.

thanks

Hi,

Thanks for your post.

So did you refer to this article for adding a Windows Server 2012 Domain Controller to an Existing Windows Server 2003 network?

http://blogs.technet.com/b/canitpro/archive/2013/05/05/step-by-step-adding-a-windows-server-2012-domain-controller-to-an-existing-windows-2003-network.aspx

Please try it again and check the result.

Regards.