Microsoft Teams
A Microsoft customizable chat-based workspace.
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Issues with External Collaboration in Microsoft Teams
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Daniel
81
Reputation points
I have a question about MS Teams external collaboration.
When an employee from our M365 tenant is invited to join an external Microsoft Team or Teams channel using their primary SMTP address, it is not being recognized or mapped to their Microsoft work account within our company tenant. This results in authentication issues for the users when attempting to access external Microsoft Teams resources to which they’ve been invited.
However, when they are invited using their UPN (SMTP that matches their UPN), this issue does not occur. External organizations are generally unaware of our UPNs and therefore default to using the primary email address to extend invitations.
This unexpected behavior disrupts normal business operations and hampers collaboration with external partners and clients, making it necessary to address and resolve this issue.
Has anyone encountered this situation and found a solution?
Microsoft Teams
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