Scheduling and managing events using Outlook.com calendar
Hello Dawn,
I understand how disruptive this is, especially since you are already leaving each fraudulent group and deleting the unwanted calendar invitations individually.
Please note that this is a user-to-user forum, so contributors cannot access your account or investigate the accounts creating these groups.
For the related messages in Outlook.com, select Report > Report phishing. Reporting suspicious messages sends them for analysis, although reporting a sender does not automatically block further messages. Phishing and suspicious behavior in Outlook
Because these group additions are recurring, please contact Outlook.com support and describe the pattern:
1, Go to Outlook.com and sign in.
2, Click the Help icon (question mark) in the top right corner.
3, In the Help pane that opens, type a brief description of your issue (e.g., "account management"), then press Enter.
4, Scroll down the page until you see "Still need help?", click Yes.
5, Select "Chat with a support agent in your web browser."
6, Review the description of your issue and confirm your email address (ensure it's an email you can access).
7, Click Confirm to create the service request and then start chat to connect with an agent.
8, This screen indicates that your request has been submitted and the system is connecting you to Outlook.com live chat support, which may take a moment to load.
When contacting support, explain that unknown accounts are repeatedly adding your Outlook.com address to fraudulent Groups and that the group calendars are placing inappropriate invitations on your personal calendar.
I hope Outlook.com support can review the recurring activity and help prevent further unwanted group additions.