We've deployed some 2012 servers using the same old GPO's we are still using for our 2008R2 boxes; the 2008R2 boxes restart no problem after updates; while the 2012 servers display a prompt that it will auto-restart in 3 days. The behavoir we would like to see is that they restart without interaction - just like the 2008R2 boxes.
Is that no longer possible with 2012? A quick look, and I cant see any new setting (GPO) that would "really force a reboot" - so any direction would be most helpful...