Problem with to demote a domain controller

Hi all

I tried today demote a domain controller, but my domain environment is still need of this domain controller to work.
I have windows Server 2003 Small Business DC as DC1 & lately I added windows Server 2008 R2 DC as DC2 in the new box as an additional area. Now, I need to downgrade the windows server 2003 SB (DC1) in an old box.
I transferred FSMO (all 5 roles) and remove DC1 from the announcement. In addition, remove it AD users & computers and Services of & Sites AD and DNS... I used the steps in this link: http://www.petri.co.il/delete_failed_dcs_from_ad.htm
When Dc1 is not connected to the network, you receive this error (see this picture of this link http://i41.tinypic.com/30upoxj.png) every time I opened all the consoles AD (AD users & computers, etc...).
Also, when I tried to change the domain controller, it seems that he could not located the domain or domain controllers. Please, see this photo from this link: http://i43.tinypic.com/2n6afx1.png
I can solve it reconnect DC1 to the network, but I don't want to keep it longer, and I don't know what Miss me? Also, I tried to use dcpromo to remove the domain controller DC1, but I got an error message that tells me that this is not the last domain controller in the forest and cannot proceed with the removal of the DC.
Can you help me as soon as POSSIBLE, I'm right here.
Waiting for your answer... Thank you!

Hi Haitham2011,

The question you have posted is related to Windows Server 2008 and would be better suited to the TechNet community. Please visit the link below to find a community that will provide the support you want.

http://TechNet.Microsoft.com/en-us/WindowsServer/default

I hope this helps.

Tags: Windows

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