Hi,
This issue I was also faced that issue on my process ie. ("The session logged off during run execution.")
this is unexpected issue that may be not cover on the document also.
If this issue occurs that time you need go to connection tab and re-enter password of your machine and save it.
by using this issue almost solve.
(Note:- if you got your solution you can mark as solution and gives kudos)
Thanks & Regards
Chetan Ninghot