Outlook Phishing email appointments appear on calendar

There is no supported Outlook.com setting in the provided material that blocks scammers from causing these calendar items to appear automatically. The available guidance indicates this is an ongoing problem, and for non-IT-managed consumer scenarios there is currently no direct prevention switch.

What can be done:

1. Do not interact with the item Do not click links, call numbers, download attachments, or reply.
2. Remove it in Outlook.com on the web Open Outlook.com Calendar, open the suspicious event, and use Delete or Decline if those options are available.
3. Check whether it comes from an added calendar In Outlook.com Calendar, review the calendar list on the left. If there is an unknown calendar, subscription, or shared calendar, remove or unsubscribe from it. This is especially relevant if the item keeps returning.
4. Turn off automatic events from email In Outlook.com go to Settings > Calendar > Events from email and change the setting so events only stay in email, or disable adding them to the calendar.
5. Report related messages as phishing or junk If the related message can be found in Outlook mail, report it as phishing or junk to improve filtering.
6. For spoofed “sent by me” messages These are typically spoofed emails, not messages actually sent from the account. Outlook can show warning indicators such as an unverified sender (?) or a via tag when the actual sender differs from the displayed From address.

If the goal is specifically to block scammers from posting to the calendar entirely, the provided material does not show a consumer Outlook.com control that does that. In managed Microsoft 365 environments, admins can mitigate with mail flow rules, but that is not presented as an Outlook.com user setting.

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