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Phishing emails are posting ongoing events to my calendar based on the fake emails. I always report phishing emails but this has gotten totally out of control this month. How can I stop this?

Kathy St Onge 20 Reputation points
2025-11-20T22:15:46.0133333+00:00

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I have tried deleting these events but then the show up again a few days later. Theses are showing up on my iPad & my iPhone

Outlook | Outlook for mobile | Outlook for iOS | For home
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  1. Hornblower409 2,660 Reputation points
    2025-11-23T04:07:35.5033333+00:00

    @Kathy St Onge

    If your problem is the same as the one described in these Q&A post:

    https://learn.microsoft.com/en-us/answers/questions/5597205/prevent-pfishing-calendar-items
    https://learn.microsoft.com/en-us/answers/questions/5613388/why-are-random-uninvited-meetings-getting-put-on-m

    Microsoft is aware of the problem but there is currently no fix. There are no Rules you can create or settings you can change in the Outlook client that will stop these SPAM Calendar Events.

    Hal Hostetler MVP-Outlook MVP Volunteer Moderator Oct 26, 2025, 12:21 PM FWIW, this issue has been reported to Outlook Engineering, they are aware of the problem, and are investigating it.

    If you are in an IT Managed environment there are Mail Flow Rules that your IT Admin can implement that will block all external Calendar invites (with specific exceptions).

    https://learn.microsoft.com/en-us/answers/questions/5558001/how-to-prevent-calendar-invites-from-external-sour

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  1. Alice-N 3,580 Reputation points Microsoft External Staff Moderator
    2025-11-21T04:13:28.4566667+00:00

    Dear Kathy St Onge,  

    Thank you for reaching out to the Microsoft Q&A Community. I understand you are having problems with phishing emails creating calendar events on your iOS devices. I am happy to assist you.  

    Please follow these steps to stop this issue:  

    • Disable automatic calendar event creation from emails:  
      • Sign in to Outlook on the web.  
      • Go to Settings (gear icon) > View all Outlook settings > Calendar > Events from email.  
      • Uncheck Automatically add events from email to my calendar.  
    • Remove malicious calendar subscriptions:  
      • On your iPhone/iPad, go to Settings > Calendar > Accounts.  
      • Check for any unknown or suspicious subscribed calendars and delete them.  
    • Report phishing emails:  
      • Continue reporting phishing emails using Report Message add-in or via Outlook’s built-in option.  
    • Clear cached events:  
      • Delete the unwanted events from your calendar after disabling the automatic addition feature.  

    Important: These steps prevent new phishing events from being added. If the issue persists, contact Microsoft Support for further assistance.  

    If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".      

    Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.  

  2. Hornblower409 2,660 Reputation points
    2025-12-06T01:36:35.2233333+00:00

    SPAM Calendar Events - Update 2025-12-05 - Still an ongoing issue. No update from Microsoft on a general solution.

    If your organization has a Microsoft Defender for Office 365 subscription, there are steps your IT Admin can take to mitigate the impact:

    https://techcommunity.microsoft.com/blog/microsoftdefenderforoffice365blog/strengthening-calendar-security-through-enhanced-remediation/4456876

    If you are in an IT Managed environment, there are Mail Flow Rules that your IT Admin can implement that will block all external Calendar invites (and allow for specific exceptions):

    https://learn.microsoft.com/en-us/answers/questions/5558001/how-to-prevent-calendar-invites-from-external-sour

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