Scheduling and managing events using Outlook.com calendar
The invitations have been landing in my junk mail. I go to my junk mail and delete all emails daily, then I delete all the emails from the trash after deleting the junk. It's not a permanent fix, as Microsoft needs to deal with that but at least I can see my own events on my calendar. Unfortunately, some days I have to do this more than once, but it can be done from the phone. Hope this helps.