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Hi All,<br />
Exchange Server Supportability Matrix<br />
<a href="https://technet.microsoft.com/en-us/library/ff728623(v=exchg.150).aspx" rel="ugc">https://technet.microsoft.com/en-us/library/ff728623(v=exchg.150).aspx</a><br />
says that Exchange 2016 CU3 and later support lowest forest functional level win 2008 R2 SP1.<br />
I know that win 2008 r2 forest functional level exist but I never heard about 2008 r2 sp1 forest functional level.<br />
I´m in proces of upgrading DCs to 2008 R2 SP1.<br />
When I upgrade to 2008 r2 sp1 and demote old 2008 servers I presume that option 2008 r2 sp1 will be visible?
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Hi All,
Exchange Server Supportability Matrix
https://technet.microsoft.com/en-us/library/ff728623(v=exchg.150).aspx
says that Exchange 2016 CU3 and later support lowest forest functional level win 2008 R2 SP1.
I know that win 2008 r2 forest functional level exist but I never heard about 2008 r2 sp1 forest functional level.
I´m in proces of upgrading DCs to 2008 R2 SP1.
When I upgrade to 2008 r2 sp1 and demote old 2008 servers I presume that option 2008 r2 sp1 will be visible?

Exchange forest functional level

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

Windows Server 2008 and Windows Server 2008 R2, based on the Microsoft Vista codebase, is the last 32-bit server operating system released by Microsoft. It has a number of versions, including including Foundation, Standard, Enterprise, Datacenter, Web, HPC Server, Itanium and Storage; new features included server core installation and Hyper-V.