Additional features, settings, or issues not covered by specific Microsoft Teams Free categories
Hi, let me help you.
Could you check whether you're currently signed in to Microsoft Teams on Edge or Google Chrome? If you find that you are logged in on either browser, please sign out of Teams completely there.
Next, open Teams desktop, go to Settings, then Devices, and see if both of those duplicate "Teams" entries show up there too as separate speaker options — if so, try manually selecting each one during a test call to see if one of them actually produces sound. Third, since you already reinstalled the app itself, it's worth also clearing the Teams cache folder (not just uninstalling the app), since a reinstall often leaves the old cached device list behind, which would explain the phantom duplicate.