For the past 48 hours or so, I consistently get this error:

I reboot, and I still get that error. I have tried switching DNS services (My ISP's vs Google DNS) with no luck.
I am using this version:

My operating system is Windows 8.1 Professional, and I have no other security software installed.
Any idea why this is happening, or it is simply because BitDefender isn't Windows 8.1 compatible as of yet?