Stop Shared Calendar Update Emails

Symptom

After shared calendars are added, a user starts getting calendar update emails from no-reply@microsoft.com.

Fix

It’s a notification setting, and it’s set per user in OWA:

Outlook on the web > Settings > Calendar > Shared calendars > turn off the update notifications.

Confirmed working.

Related: Update Visibility on Room Calendars

Tip

Anyone else who has the same shared calendars added will get the same emails. Switch the setting off for them too before they log their own tickets.