Using Outlook for iOS for personal email and calendar management
Hi Shaun,
Thanks for reaching out. You’re not alone on this many users have faced similar issues recently. I'm here to help!
The first step to prevent this is disabling automatic event additions. In Outlook Web, go to Settings → View all Outlook settings → Calendar → Events from email and turn off “Automatically add events to my calendar.” For the desktop app, navigate to File → Options → Calendar and uncheck “Automatically process meeting requests and responses.” Microsoft 365 admins can also use PowerShell to stop automated processing.
Set-CalendarProcessing -Identity ******@domain.com -AutomateProcessing None
If the issue persists, review device profiles and consider stricter calendar policies. Microsoft is aware of the problem and working on improvements, but these steps are the most effective workaround for now.
I hope you find this information helpful. Please let me know if you have any further questions If the answer is helpful, please click "Accept Answer".
Regards,
Carlo