A recent macOS Time Zone bug related to the update to permanent daylight saving time introduced a crash in certain versions of Outlook for Mac when using Calendars. The latest Outlook update resolves this issue.
Here is how to update Outlook for Mac:
- Quit Outlook
- Click on the FT icon in the top-right of your menu bar.
- Click Open Self Serve Business App.
- Click Your Apps
- Click Update Now under Outlook.