Hi @David Miller
Could you please tell me if you log in to your personal account by default when you open Teams and need to switch to your work account to work? Or do you need two windows, one to log in to your personal account and the other to log in to your work account?
If it is the former, please refer to Teams will always log into the domain-joined PC account.
If it is the latter, please try to log in to your work account using the Teams client and log in to your personal account using the web client. https://teams.microsoft.com/v2/
If there is any misunderstanding about your needs, please let me know.
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