From old to new Teams app? If you get stuck due to a settings snafu, maybe delete and let Teams rebuild directories c:\Users\username\AppData\Local\Microsoft\TeamsMeetingAddin c:\Users\username\AppData\Local\Microsoft\WindowsApps\MSTeams_8wekyb3d8bbwe c:\Users\username\AppData\Local\Packages\MSTeams_8wekyb3d8bbwe c:\Users\username\AppData\Local\Packages\MSTeams_8wekyb3d8bbwe\LocalCache\Microsoft\MSTeams c:\Users\username\AppData\Local\Packages\MSTeams_8wekyb3d8bbwe\LocalCache\Roaming\Microsoft\MsTeams c:\Users\username\AppData\Roaming\Microsoft\Teams