Question
I have encountered the now-infamous "Forever Mourning" bug in Skyrim. I haven't cleared Driftshade Sanctuary or completed the "Find Helm of Winterhold..." miscellaneous quest. What should I do? I've heard that I should get the Helm without killing any enemies inside Driftshade (using Invisibility potions and such), then wait 32 in-game days, then return to Jorrvasky. Is there another way? How can I get around this bug?
Answer
Nope, there is currently no other way, as this one was already difficult enough to come up with. Even on pc, there is no way to use the console to work it out. It is probably what you already found, but I will add it anyway in case someone else is looking for it:
According to The Elder Scrolls wiki:
Solution #1 - For adventurers who have not cleared Driftshade Refuge
or completed the quest to find the Helm of Winterhold.
You may get the bug if you have the quest to retrieve the Helm of
Winterhold for the Jarl of Winterhold, under misc quests, but have not
completed the quest to retrieve the Helm. Load up on invisibility
potions and sneak through the Refuge (killing no one), retrieve the
Helm, and return it to the Jarl. Then return to Whiterun and Vilkas
should give you the next quest, Purity of Revenge.
NOTE: You don't need to sneak or use invisibility potions in
Driftshade Refuge. I ran through full speed ignoring everything until
I got the helm and ran out. Turned the quest into the Jarl and THEN
went to kill the witches. This wont work if you have already killed
the witches and got the message to return to Kodlak. As long as you do
NOT talk to Vilkas and finish Blood's Honor, you can repair the glitch
in this fashion. -Correction- this CAN be done if the witches have
been killed already and you HAVE NOT returned to Whiterun. Sneak
through to retrieve the helm and return the Helm of Winterhold to the
Jarl of Winterhold in order to complete the quest. After the quest is
complete make your return to Jorrvaskr, and Vilkas should give you the
next quest, Purity of Revenge. (XBOX). Confirmed x2 on Xbox 360. **
This also worked on PS3, I was detected twice inside Driftshade Refuge
but I hid long enough for the enemies to go back to patrol mode.
Actually, you might want to describe more accurately at which point of the Companions quest you are (for example, if you already returned to Jorvasskr or not)
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