Microsoft Office 365 - (Outlook) - How to Prevent Outlook from Auto Adding Events to a Calendar
This article will provide steps to stop Outlook from automatically adding meetings to a calendar.
How do I prevent Outlook from automatically adding events to my calendar?
1: Select File from the main Outlook screen:
2: Click Options, bottom left of screen:
3: Once in Options, scroll down to Tracking section and uncheck the Automatically process meetings requests... function. This will disable meetings and polls from being automatically added to your Outlook calendar.