This Meeting Is Not In The Calendar Folder. Attendee responses won't be displayed in the meeting. Thank you for posting to microsoft community.
In my calendar folders i seem to have 4 series of calendar groups. Locate the calendar invite in your ‘deleted’.
To Mitigate The Issue, You Can Use The Clear Offline Items For Your Calendar.
1.in calendar view, click reset view and search the missing meeting.
This Step Clears The Calendar Items In The Outlook Store (Ost) On Your.
When anyone else creates the meeting, they get the message this meeting is not in the calendar folder.
2.Please Check If The Missing Meeting Is In Deleted Items Folder.
Images References :
If You Want It To Work With Other Calendars (Including Delegated.
Based on your description regarding cannot delete meeting invite.
This Meeting Isn't On Your Primary Calendar.
2.please check if the missing meeting is in deleted items folder.
If So, If You Didn't Move.