Forum Discussion
How To Stop 100's of Outlook Calendar Invites From Teams?
MitchC Hello, if I understand your issue correct I believe this can adjust the behavior you're describing (as you need to check the associated group/groups underlying settings).
"Send copies of group conversations and events to group members if you want members to receive copies of group messages and calendar items in their own inbox."
MitchC Try this. It worked for me (fingers crossed because 2020 
).
Go into Calendar and right click on an event/class invite.
Click DECLINE and then click SERIES (you're offered Occurrence or Series).
You should now have deleted the "series" of invites to that event/class meeting. All of the invites should be deleted from your calendar. The invitee will get an email notification that you have declined the event.
Hope this helps!
LisaBennett1971 Is there a way to join a Teams meeting after declining the invitation?