This recently started happening and to the best of my knowledge, I have made no changes to cause it. I can open Outlook and it does not crash until I either do a send/receive or, strangely, I delete an email. I can receive new emails and open them. Win 10 is up to date. I use AVG for my anti-virus.
I have posted this on the Microsoft community, and it was suggested to uninstall AVG, then check com add-ins and then do an in-place repair. I would rather not go that route until I check other explanations or solutions. I have seen suggestions about deleting the Comcast profile and creating a new one to solve some problems. Also, repairing the files.