Nope, also I've noticed I can still get notifications, but I can't open the actual app. I've noticed the issue has extended to other apps. For example, I received a notification from the news app, but when I clicked on the news app it wouldn't maximize.
There are no updates on my store account. Windows is fully up to date. Unfortunately, this link doesn't apply to my issue since I am unable to open the calendar to begin with, and need to in order to access its settings.
I have been using the calendar app to store some of my upcoming events, some of which I don't remember since I threw away/deleted the original piece of information stating when the event is. Absolutely randomly, I was unable to access the calendar app. The icon on my start menu (I use Classic...