@TimGran1964 Hello, well. Office Home or Office 2019 isn't the solution so I have no idea why this was installed "by Microsoft" as Teams isn't included?
Anyway, to have the Teams add-in available in the Outlook client it's necessary to install the Teams desktop application. Even installed correct, the add-in is sometimes blocked in the client and can be enabled either from File - Options - Add-ins or the registry.
But first of all, make sure you're using an eligible subscription for Teams. See this table for more info
https://docs.microsoft.com/en-us/office365/servicedescriptions/teams-service-description
And this as well
https://www.microsoft.com/en-us/microsoft-365/microsoft-teams/compare-microsoft-teams-options?rtc=2
Hope this helps you get it sorted!
