For those using Norton Firewall - ActivationUI.exe
This may help some people if oyu are using Norton internet security. I couldn't get the game to activate, kept getting the error "unable to contact ea servers to activate Digital deluxe on this computer using this account, please try later"
I finally found that Norton was blocking a program in the Battlefield4/Core directory called ActivationUI.exe. Once I forced Norton to allow the connection...walla, game loads and runs fine.
So check your firewalls folks for that program. Even if BF4 is authorized to run, it won't if that exe file gets blocked.
