I am currently about to completely retire a 2003 R2 DC Server with a Windows 2012 R2 Server; single server environment. Right now, I am unable to raise the FOREST functional level from Windows 2000 to 2003, the option is actually missing. The Domain functional level is already set to 2003.
Which method can I use to raise the 2003 R2 DC to the Forest Functional Level to 2003 so I can put the Windows 2012 R2 in the same Forest/Domain?
I did a netdom query fsmo, all the roles are currently pointed at DC name 'NS1'.
NS1 = 2003 R2
