Additional features, settings, or issues not covered by specific Microsoft Teams categories
FYI, I got the current status info to work in Outlook however, it doesn't seem to stick and the checkbox for chat app in 365 remains unchecked.
In registry under HKEY_CURRENT_USER\Software\IM Providers\MsTeams, add a value of 2 for the UpAndRunning REG_DWORD.
If you aren't familiar with the registry editor, don't do this.