Board Thread:Lore Discussion/@comment-71.61.178.23-20130722105712/@comment-24.44.141.89-20131031230944

71.61.177.24 wrote: You can if you enter their realm, but nobody said anything about killing any Daedric Princes. The idea was to convince some to join and then simply defeat the rest without properly killing them. You could kill their Nirnly form, but that's not the same.

- WorshipsMeridia This reply may be a little late but Daedric Princes literally can't die, even in their realms. They are immortal. Only the Aedra can.

"As part of the divine contract of creation, the Aedra can be killed. Witness Lorkhan and the moons.

The protean Daedra, for whom the rules do not apply, can only be banished."

- Aedra and Daedra, the Imperial Library

http://www.imperial-library.info/content/aedra-and-daedra