About guest invitation

Question

When I try to invite guest users from other region tenant(China) I got following error

User invitation failed
This invitation is blocked by cross-tenant access settings. Administration for both your organization and the inviting user's organization must be configured to allow invitations in cross-tenant access settings

Do I need to configure B2B collaboration setting?
I though I dont need to configure B2B setting for just guest invitation though........

Answer 1

Hi @Kuronuma • 

Thank you for sharing your issue on Microsoft Q&A.   

I Understand that you're trying to invite guest users from another tenant, specifically from China. The error message suggests that the invitation is being blocked due to cross-tenant access settings. To resolve this, both your home tenant and the resource tenant must enable B2B collaboration settings.   

Yes, you need to configure the B2B collaboration settings for cross-tenant access to allow guest invitations from other region tenants, including those from China. The error message you're seeing indicates that cross-tenant access settings are blocking the invitation, which means that both your organization and the inviting user's organization must have the appropriate settings configured to enable this functionality.   

For B2B Collaboration settings please refer this link: Cross Cloud Settings - Microsoft Entra External ID | Microsoft Learn   

Hope this helps. Do let us know if you any further queries.

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Best Regards. 
Harshitha Eligeti