I'll give my build number another check when I get home then. I'm running Windows 8.1 Pro (Build 9600) in a non-VM environment on my desktop PC and I'm having this issue. I'm pretty sure that 9600.winblue_rtm.130821-1623 is the only build with the 9600 tag though.
Is the setting you changed only relevant to VMs? If not, what did you change?
Is the setting you changed only relevant to VMs? If not, what did you change?