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AtanasM's avatar
AtanasM
Iron Contributor
Jul 12, 2023

I cannot add external participants in a shared channel in Teams

  • Hi AtanasM,

    This can be a solution in the future:

    MC635987 (July 11, 2023): "...provide a way for organizations to capture and redirect requests for external collaboration when users attempt to add an external member to a shared channel where B2B direct connect cross-tenant trust has NOT been mutually configured between the two organizations.”
  • The AtanasM,

    Please check:

     

    In "External Identities > Cross-tenant access settings": add the other organization.

    The other organization also has to add your organization in their tenant.


    In "External Identities > Cross-tenant access settings > Added organization"
    - Your Microsoft 365 organization has to configure the B2B collaboration and B2B direct connect settings (inbound and outbound access)
    - The other Microsoft 365 organization ALSO has to configure the same the B2B collaboration and B2B direct connect settings (inbound and outbound access)
    - Start with allow "all users and groups" and "all applications". You can narrow it down later

    In "External Identities > External collaboration settings". Collaboration restrictions: “allow invitations to be sent to any domain (most inclusive)”. This is also the default setting.

    In Microsoft Teams admin center > Teams policies > Global (Org-wide default). Check toggle on
    - Invite external users to shared channels
    - Join external shared channels

    • AtanasM's avatar
      AtanasM
      Iron Contributor
      I did all these steps, but still cannot add guests.
      • MathieuVandenHautte's avatar
        MathieuVandenHautte
        Steel Contributor
        Hi AtanasM,

        This can be a solution in the future:

        MC635987 (July 11, 2023): "...provide a way for organizations to capture and redirect requests for external collaboration when users attempt to add an external member to a shared channel where B2B direct connect cross-tenant trust has NOT been mutually configured between the two organizations.”

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