Can I create a 'Guest' account for external user and then invite him to a shared channel of a Teams group?

Question

Hello,

Can I create a Guest account for external user and then add him only to a shared channel (without adding it to the parent/main Teams group)? I know I can add them to a Teams group for collaboration but I wasn't sure if this is possible. My understanding is that this is not 'B2B Direct Connect'

Answer 1

Dear @Edward, Welcome to Q&A Forum.

I understand you’d like to create a Guest account for an external user and add them only to a shared channel, without giving them access to the main Team.

At this time, Microsoft Teams does not support adding Guest users directly to shared channels. Guest access works at the Team level, which means a guest must be added to the full Team and will have access to its standard channels.

If your goal is to allow an external user to access only a specific channel and not the parent Team, the supported approach is to use Shared Channels (Teams Connect). Shared channels do not use Guest accounts. Instead, they rely on B2B Direct Connect, where the external user stays in their own organization and is granted access only to that shared channel.

Please note that for shared channels with external users to work:

The external user must have a work or school Microsoft 365 account

B2B Direct Connect must be enabled by administrators in both organizations

You can find Microsoft’s official explanation here: Shared channels in Microsoft Teams

Please understand that our initial response does not always resolve the issue immediately. However, with your help and more detailed information, we can work together to find a solution.

I truly appreciate your patience and understanding. If you have any further questions or need further clarification, please feel free to reach out. I'm looking forward to hearing from you. 

Thank you for your cooperation.

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Answer 2

Guests (Microsoft Entra B2B collaboration accounts) cannot be added directly to a shared channel. Shared channels do not support adding Entra guest users as members.

Instead, external participants in shared channels must be added via Microsoft Entra B2B direct connect. With B2B direct connect:

• External users are not created as guest accounts in the resource tenant.
• They are added to the shared channel using their home organization account and managed from the Teams client by the shared channel owner.

So:

• A guest account can be created and added to a team (standard/private channels) for collaboration.
• That same guest account cannot be used to add the user only to a shared channel of that team.
• To use shared channels with external users, configure cross-tenant access/B2B direct connect and add them as B2B direct connect users, not as guests.

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References:

• Shared channels in Microsoft Teams
• B2B direct connect overview
• Guest access in Microsoft Teams
• IT Admins - Overview of external collaboration options in Microsoft 365
• Shared channel owner and member roles in Microsoft Teams