Using New Outlook on Windows for personal email, calendar, and contact management
Hi, I'm John! I will help you with this.
Just to confirm, is this meeting request in your Inbox, Calendar, or a shared/delegate mailbox? Also, do you see Yes / Maybe / No, or only normal email buttons like Reply and Forward?
Please open the meeting request from your Inbox or Calendar. Inside the meeting invite, look for the response buttons such as RSVP, Yes, Maybe, or No.
Let me know what you find. Thanks!