Additional meeting and call-related features and issues within Microsoft Teams for business
Hi Parker Inez
You can refer to AI's response first, as it covers the supported Teams join scenarios in detail.
In addition to the scenarios already mentioned, it is worth noting that the presence of a name-entry field is not determined solely by whether the user is joining as a guest. Teams first determines how to identify the participant based on the account and authentication state used to access the meeting. If the user is already recognized through a work or school account, a Microsoft account, or an existing guest account in the organizer's tenant, Teams may automatically use that identity and not provide a separate field to enter a display name.
The meeting organizer's configuration can also influence the join experience. Organizations can restrict anonymous participation and require attendees to join with a verified identity, which may result in different pre-join screens from one meeting to another. As a result, two meetings can present different joining options even when accessed from the same Teams client.
Since the name-entry screen appeared when joining through the browser but not during the original attempt, this suggests that a different authentication path was used. In such cases, the behavior is generally expected and does not necessarily indicate an issue with the Teams client itself.
For more information, you can refer to:
Join a Microsoft Teams meeting or event outside your org | Microsoft Support
Guest access in Microsoft Teams - Microsoft Teams | Microsoft Learn
I hope this information helps.
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