Why is the Dawnguard attacking me?

I am a werewolf, after visiting the Vampire lord for the first time and turning down his offer to become a vamp, i go back to the Dawnguard castle and find them fighting vamps. After the vamps are defeated they attack me. WTH? Xbox 360 btw.

I thought maybe i accidentally attacked them while fighting the vampires, ao i reloaded the last save and just sat on the sidelines while i watched the dawnguard kill the vamps and they still came acter me after all the vamps were defeated.

Since you're not that far in, I'd say try deleted the DLC and try reinstalling cause that happened to me too.

Thanks

Omg did you stop to think you hit them noob

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He said the second time he just sat and watched, so no hitting.
And there's no need to be calling people noon or anything of the like, let's keep things friendly.

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I had this problem once myself. Do you have any bounties in the Rift? If so, you need to pay them off ASAP. That will calm the Dawnguard down.
If you don't, it may be what I call the "invisible bounty glitch". Sometimes you'll get a bounty but it won't show up under the crime menu and the guards will act like it's not there. Don't ask me how or why this happens but I've had it happen to me twice now.
Most likely this glitch occurred in Riften because that is the Dawnguards area in part, so fast travel to Riften and attack a guard. Be sure that if you have a follower or Serana with you that you have them wait somewhere outside of town. I'd suggest leaving them outside the cave where Fort Dawnguard is; just tell them to wait for you. If you have a follower with you this won't work; they'll aggro every single guard and you will die, not fixing this glitch.
Anyway I hit one guard with an arrow once, sheathed my weapons and then paid the bounty (I think it was like 40 septims or something). Try and do this where only one guard can see you if possible so the whole town doesn't attack you (not sure if that'll happen or not but better to not risk it). Now go back to the Dawnguard and see if they attack you. If they don't, problem solved. If they do, then it's something else. :/


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There is also a glitch that makes every living thing on Skyri m attack you and neither can you sheathe nor is there a bounty to be paid. I think to solve it hou have to reload a save from before the glitch happened and remove all your weapons (and just to be sure, your armor too), I think this shohld stop the glitch.

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This hasn't happened to me before, but if it did I would go to a town, attack someone, in the Rift obviously, turn myself in and then try again - doesn't work. I gots nothin'.