Same sort of issue started about a week ago on my laptop (Dell inspiron 7620 intel core i7-12700 with 14 cores). Started doing the same thing on my desktop (Dell XPS 8950, Intel core i7-12700, 12 cores)
All the mail functions work well but if I open the calendar, Outlook freezes up and shuts down in about 10 seconds.
Also there is no share function. Only the option to print the calendar is in the share tab. It was an important part of my work schedule communication protocol to the team.....
I would try to publish it to a cloud server myself, but it won't stay up to try. testing Thunderbird. It's not crashing but also does not support sharing, I can link to my other personal computers but not the team. Might be able to publish to the cloud though.
I have been using Outlook since the 90's too bad you guys are downgrading it. I will just have to write my own calendar app.
For now, I will try uninstalling and reinstall as suggested.