If you cannot see people’s presence status in Outlook, then this post will help you fix the problem. The presence status of a user in Outlook shows the user’s current availability to other people.

To change the default browser in Outlook 365, go to File > Options > Advanced, then scroll to “Link Handling” and set “Open hyperlinks from Outlook in” to your preferred browser, like Chrome.

You can change notification sounds for emails and calendar events directly within the new Outlook app for Windows. In classic Outlook, you can choose whether to play a sound when a new email arrives.