i had the same problem. they have done a poor job activating it when you load it up. make sure it loads in main menu. tthen go to riften. a dawnguard will start talking to you at the entrance. there you go
i had to go to the town riften to get the quest for dawnguards activated. how do i activate the vampire side? do i have to go elsewhere or continue.......i went to solitude there and vampires attacked......but theyre dead now........LOL!
I have been trying to get dawnguard to work for the last 2 hours. It freezes the Xbox completely right after the loading downloadable content screen comes up. About to Try again
delete it and reinstall it.........dont worry its already payed for (i assume unless you illegally got it) you can re download it after deleting it. i had to do it too.