Hi,
Thank you for sharing your question. I understand how worrying it is to see unauthorized or spam calendar entries appear, especially when they contain threats or warnings about your account being blocked.
These entries usually happen because Outlook is set to automatically add events from emails, which spammers exploit by sending fake invitations that appear directly on your calendar. Removing them and preventing future ones typically involves turning off automatic event additions, deleting the spam invites without interacting, and blocking or reporting the sender. Guidance from Microsoft Q&A recommends deleting spam entries, adjusting calendar permissions, and preventing invites from unknown senders. Security experts also advise disabling automatic addition of events from email in Outlook settings to prevent future unwanted entries. [learn.microsoft.com] [malwarebytes.com]
You can do this by going to Outlook settings and turning off “Automatically add events from email.” This stops spam invites from populating your calendar even if the email lands in your spam folder. It’s also helpful to right‑click the event and report it as junk to improve Microsoft’s filtering.
May I ask whether you are using Outlook on the web, the desktop version, or the new Outlook? This will help me guide you to the exact steps for your version.
I hope this helps.
Best Regards,
Noel