Board Thread:General Discussion/@comment-3432483-20130626224839/@comment-186.94.7.51-20150928024105

This is a bug.

Probably you have several Mods that you cannot tell which is the one that's triggering the bug. To fix it -at least when it appears- you must kill the vampires in the Canyon before entering into Fort Dawnguard, usually there are two Vampire Scouts. Kill them, and then wait (T) for 24 hours. Save and go check if the Dawnguard Guards are hostile. If they're still hostile, go out from the Canyon, wait another 24 hours and enter. You should have fixed the bug this time.