shared channel with external guest

[admin_amicial]

In my organization, we need to create shared channels to optimize the workflow. However, the guest are not member of any organization (non tenant) they almost have mail like : @hotmail, @gmail,...

When we try to share the channel, the mail is unaivailable even if they are registered as guest in our tenant. What can I do ?

Thx

[#2 · Accepted solution]

@admin_amicial Shared channels only work with business accounts, where the external user has Teams in their companies tenant.

If you use Azure AD b2b Collaboration to create guests in Teams rather than shared channels you can then invite people without their own tenant. 

B2B collaboration overview - Azure AD - Microsoft Entra | Microsoft Learn