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A few things you should know about raising the DFL (and/or) FFL to Windows Server 2008 R2

BrandonWilson's avatar
BrandonWilson
Icon for Microsoft rankMicrosoft
Sep 19, 2018
First published on TechNet on Apr 09, 2012   Hello Greg Jaworski here again to briefly talk about two issues when raising the domain functional level (and/or) the forest functional level to Win...
Updated Feb 07, 2020
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GregJaworski
Joaquin1998's avatar
Joaquin1998
Copper Contributor
Jul 30, 2019

I need to raise the functional level from 2008 R2 to 2016, all the DCs are now 2016, after just demoting the last 2008 R2 DC.

Could I "undo" the raising of the functional level back to 2008 R2 from 2016, if I see applications not working well? Could I undo from 2016 to 2008 R2 directly or do I have to undo from 2016 to 2012 R2, then to 2012, then to 2008 R2? Thanks.