Same issue here
Along with a host of others including the NAT... I am unable to join matchmaking or any multiplayer mode at all prior to this and now I'm unable to even start the game because of the above issue ("game cannot be activated at this time"). I don't know how wide spread it is but the more and more issues I've experienced with the game, the less I'm inclined to get it on launch especially for a full priced title. Hopefully it gets fixed but there's been a host of issues I've been experiencing and its been incredibly frustrating especially with less than month away from launch.
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