[Samba] Add Windows 2012 R2 Server as DC to a Samba 4 Domain

[Karl Heinz Wichmann]

Hallo

I have sernet-samba-ad-4.2.1-7 up and running.

I added Windows 2012 server machine to Samba domain.
However,  I  have  not  been  able to get the Windows server 2012 to a
secondary Domain Controller.

Adprep could not retrieve data from the server through Windows Managment 
Instrumentation (WMI).
[User Action]

The RPC Server is unavailable.

Then i run adprep /forestprep on the windows server 2012. I get the same 
error: The RPC Server is unavailable.

Karl Heinz