Additional features, settings, or issues not covered by specific Microsoft Teams categories
we have had an additional account (Notetaker) with no email address that just has access to Teams
Could you tell us how did you create this additional account? And is this account in your domain?
According to your description, it seems admin has assigned the Teams license for this user account. To check if this account is available in Microsoft Teams, we recommend you try to login in Teams web client to see if it can be reproduced?
Meanwhile, please also check if you are using Teams Classic or New Teams client.
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