Using Classic Outlook on Windows for personal email, calendar, and contact management
I'm having the exact same problem for myself.
Just reading an email (not even clicking on anything) can cause this to open and it's infuriating.
The link it's trying to open: https://outlook.office.com/opx/\*\*\* Email address is removed for privacy ***/activityfeed/?hostApp=outlookdesktop&culture=en-US.
What to do to fix it?????