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How to demote a server 2012 r2 ESS cnange the local domain and add it back with a different Name

We want to change the Local domain name on one of our new clients new servers.
Would the easiest way be to demote the server and then promote it.

or is it even possible to do this after it has already been setup as the primary DC?
* dcpromoWindows Server 2012

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8/22/2022 - Mon
Sarang Tinguria

If there are no users and computers in domain then just demote and promote it ..there are tools like rendom.exe but since this seems to be new domain then it is fair idea to demote and promote with the new name.

If it already has users and computers then you are in trouble and you will have to proceed with admt migration after creating parallel forest with new name and then migrate using ADMT tool ..if you need more info on this then let me know

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Its only 1 server and its the DC. SO yes it is holding the FSMO roles.
This server belong to another company and was bought out so I have to add new users and PC's anyway.
the old users are deleted and PC's. the only thing it is showing in the Dashboard is the server.

SO you think demoting it and putting the server back to a workgroup then promoting it again will be OK?
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I did not try this and just re-added the computers and users. Thanks for your help!!
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