Managing personal Outlook.com account settings, security, and privacy
@Krystn Smerecki said
I am getting tons and tons of inappropriate outlook calendar invites
Spam Calendar Events
This is a know issue. Microsoft is aware of the problem but there is currently no fix. Unless you are in an IT Managed Environment there is nothing you can do to stop them.
See the Answer by "Hornblower409 Mar 20 2026" in
https://learn.microsoft.com/en-us/answers/questions/5829157/scam-outlook-calendar-invites
Spam Group Joins and Calendar Events
If you also see Group Calendars that you never joined, this is another trick the Spammers use. Also a know problem. No fix.
All I can offer:
For suggestions on how to Leave a Group. See:
https://learn.microsoft.com/en-us/answers/questions/5915544/no-option-to-delete-calendar-group-in-outlook
Vote for and Comment on this Feature Request:
Add an option to block being added to Outlook Groups without consent
https://feedbackportal.microsoft.com/feedback/idea/a17de24f-8ce6-f011-92b9-7c1e5244b89c
(You must "Sign In" at the top right of the Feedback page before you can vote).