Brand new Apple Magic Mouse won't scroll

There is a scrolling issue with the latest Magic Mouse that was fixed with macOS Sequoia 15.1 and later.

See the following for upgrade instructions: How to upgrade to macOS Sequoia - Apple Support

There are a number of discussions in the Microsoft Community forum, including some fixes that worked for some but not everyone.

See: https://answers.microsoft.com/en-us/msteams/forum/all/ms-teams-not-working-on-macos-sequoia-150/ba4efb70-5571-42f7-b0ac-a553b0f7ba9a?page=1

and

https://answers.microsoft.com/en-us/msteams/forum/all/teams-not-working-after-updating-it-to-sequoia/ad902498-3e00-41a6-92f7-4ed02252029b