Calendar folder shows I have 1 unopened item...like its email?

[americanpie_23]

In the Outlook Folders list, the calendar icon is saying I have one unopened
item within Calendar? It's just like the Inbox icon showing how many emails
are unopened, but this is in the "Calendar". Like a new email got erroneously
routed to the Calendar...??? How do I find it to get rid of it?

 

[Diane Poremsky]

you can use find to look for unread items in that folder or switch to a
table view (By Category works good for this) and browse the list of items
looking for the bolded one. Of you don't care what it is, right click on
the calendar folder and choose mark as read.