5.12 Firewall Win8 make BF3 Access Denied

problem:
if quit the game use
ALT+F4
freeze game at save on exiting

inside the game exit button
freeze game at save on exiting

outside the game WEB exit button
freeze game at save on exiting

Task Manager killtask
Access Denied

try many things
now i remove the comodo Firewall will normal
No problem of exit game

5.12 on WIN8 problem ?
neew wait of V6?

comodo firewall only & close D+
Win8 Pro 9200