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Raising AD Domain Functional Level to 2012 R2

By McIntyreM ·
Tags: Microsoft
Recently, I upgraded both of our domain controllers to Windows Server 2012 R2. Before I did that, one of them was running Windows Server 2008 R2 and the other Windows Server 2008. Our domain is currently running at Functional Level 2003; I don't know why it wasn't at least raised to 2008. Anyway, I'm looking for some advice and feedback about raising the functional level to 2012 R2. What would the impact be? Would I expect any detrimental side-effects? Can I raise it from 2003 to 2012 R2, or do I need to take add a middle step in there and raise it first to 2008 or 2008 R2? Any help would be appreciated. Thanks.

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Domain Functional Level

by BFilmFan In reply to Raising AD Domain Functio ...

Provided you don't have a version of Exchange earlier than version 2010, you can raise your functional level to Windows 2008 with no issues.

If you have an earlier version of Exchange, you will have to upgrade those systems to either 2010 or 2013.

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