After upgrading to Windows 11, you have Chat in the taskbar. This is really a Teams personal client, meaning that you end up with two Teams clients on the PC. To make life even more confusing, if you search Windows 11 for Teams, you see the personal version suggested first. Some pruning of clients is needed.
https://office365itpros.com/2021/10/20/how-to-stop-teams-clients-auto-starting/
