Change Outlook Calendar View. Learn how to switch your outlook calendar view between day, week, or month views, change the week displayed, and see different shared calendars. Restarting the outlook app will sometimes cause the toggle to reappear, but there is a more reliable way to swap back to outlook (classic).

I am using mac and i see no options to do this. If your outlook view has changed, you can reset outlook view to default on windows 11/10.