Outlook is a terrific email/calendar/contact application - there are many others out there, but personally I haven't found one I like better (yet!). However, once in a while I have multiple windows open in Outlook - for example I'll have one window for my Inbox open, another for my Calendar and even sometimes one for my Contacts. Sometimes these windows get "stuck" and even though you close them all, when you re-open Outlook the next day, all the windows open instead of just one.
Fortunately, there is an easy fix for this issue:
This should fix the issue and future launches of Outlook should just have a single window.
My name is Rick Towns and I am an amateur astronomer and computer programmer from Canada. This is a collection of interesting posts I've gathered over the years.