Does anyone have a definitive solution to killing Miraak and ending that quest? I have spent nearly a full day of looking up different approaches but have yet to find one that works. He stays "ethereal" and so far un-killable. I am on a PC, so a console command or two would be greatly helpful.

Note: I have all of the "unofficial" patches and a few graphics mods and have "LOOT"-ed the load order. I've been playing this same character for around 110 hours without issue up until now. I have only one save game, so loading an oldedr save isn't possible.

Try this:https://www.youtube.com/watch?v=w0nbeGsgUzQ

well i wouldn't know just wait it out and try it maybe uninstall a couple of mods or use console commands

use a regular weapon, The smithing and enchantments you use might be overkilling him and break his scripted fight. I had to do this because my 300 damage crossbow bugged him out

What level are you?