How do I change the alert sounds in Outlook for Mac? When I go to Preferences, then Notifications and Sounds, the dropdown menu for Sound Set says Default. There is no other choice of sound sets on that menu. When I click the arrow next to the individual events (New message, Message sent, Reminder, etc.) it plays a sound for each--apparently the only sound available.
I've Googled up a few suggestions that didn't work:
I went into System Preferences > Notifications and deleted Outlook from the list of applications, then restarted Outlook. No change in Outlook Preferences.
I added some new sound files (various formats--.wav, .mp3, .m4a, .aiff) to user>Library>Sounds and restarted my Mac. I still don't have any new options in Outlook Preferences.
I found instructions for creating a new sound set in an existing Outlook Sound Sets folder located in user>Library>Group Containers>UBF8T346G9.Office>Outlook>Outlook Sound Sets. I put the same new sounds there. I tried it with them loose in the Outlook Sound Sets folder, and also with them contained in a new folder titled "my new sound set." I quit and restarted Outlook. It didn't give me any new options in Outlook preferences.
I have a current Office 365 subscription on a MacBook Pro. The Outlook version is 16.42. I'm running Mac OS 10.14 Mojave.