Problems unjoining a server from a domain created by Server 2012 Essentials

I just configured a server with Server 2012 Essentials. It forces you to create a domain, but I will be joining this server to a domain at my customer's site. When I go to computer properties, the "change" button is greyed out. New to Essentials. Any suggestions? Thanks in advance.
Linda SaulnierNetwork TechnicianAsked:
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David Johnson, CD, MVPOwnerCommented:
if this is serve 2012 Standard or datacenter and you only added the Essentials role you have to remove the role and then remove ADDS role (to do the dcpromo removal it will just do the domain removal .. if it is server 2012 essentials it cannot be joined to another domain.. same rules as SBS had in the past

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Linda SaulnierNetwork TechnicianAuthor Commented:
Thank you. Very helpful
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Windows Server 2012

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