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Child Domain, Forest and Domain Functional Levels

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Last Modified: 2014-11-22
Hi,

We have 7 domain controllers with 2008 domain functional level and 2003 forest functional level. I like to change the forest functional level to 2008. Also I want to add a child domain with a 2012 R2 domain controller

q1. Do I have to raise the forest functional level in all domain controllers or if I change it in the primary one will it replicate to others?
q2. When I add the 2012 R2 domain controller how do I tell it you work with 2008 domain functional level?

I don't have test system so I'm bit nervous doing this on the production before I get the correct knowledge.

Thank you.
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Technical Lead - Active Directory
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Thanks mate. this is very useful.

the new DC with 2012 is going to be a child domain. I will follow the same steps as creating a new 2012 domain right?
Dan McFaddenTechnical Lead - Active Directory
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