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Hi,<br />
<br />
I've a couple of 2012 DC's I want to upgrade to 2012 R2. Two of the DC's are also running DHCP. <br />
<br />
Would it cause any problems if I upgrade them to 2012 R2?
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Hi,

I've a couple of 2012 DC's I want to upgrade to 2012 R2. Two of the DC's are also running DHCP. 

Would it cause any problems if I upgrade them to 2012 R2?

Upgrading 2012 DC to 2012 R2

Windows Server 2012 is the server version of Windows 8 and the successor to Windows Server 2008 R2. Windows Server 2012 is the first version of Windows Server to have no support for Itanium-based computers since Windows NT 4.0. Windows Server 2012, now in its second release (Windows Server 2012 Release 2) includes Foundation, Essentials, Standard and Datacenter, and does not support IA-32 or IA-64 processors.

Windows Server 2012

Active Directory (AD) is a Microsoft brand for identity-related capabilities. In the on-premises world, Windows Server AD provides a set of identity capabilities and services, and is hugely popular (88% of Fortune 1000 and 95% of enterprises use AD). This topic includes all things Active Directory including DNS, Group Policy, DFS, troubleshooting, ADFS, and all other topics under the Microsoft AD and identity umbrella.