EXTERNAL SharePoint Azure B2B Setup for External Tenants – Ariento

Before you start:

These instructions are for the organization that you are trying to send an invite to access a SharePoint site. The external organization will need to complete the following steps to be able to receive invitations to access SharePoint.

Instructions:

Enable Azure B2B Integration with SharePoint

Log into Microsoft Entra admin center of the tenant you would like to share from.
Navigate to External Identities > Cross-tenant access settings > Default settings
Verify/update outbound access B2B direct connect settings to the following:
1. Users and groups
  1. Access status
    1. Allow access
  2. Applies to
    1. All Users
2. External Applications
  1. Access status
    1. Allow access
  2. Applies to
    1. All applications

Sharing between different Microsoft Cloud Environments

Exchange the Microsoft 365 Tenant information ID's between the two organizations (Entra Admin > Identity > Overview > Tenant ID)
Log into Microsoft Entra admin center
Navigate to External Identities > Cross-tenant access settings > Microsoft cloud settings
1. If sharing from GCC High, click on the checkbox next to 'Microsoft Commerical' and click on Save
2. If sharing from GCC/Commerical, click on the checkbox next to 'Microsoft Azure Government' and click on Save
Navigate to External Identities > Cross-tenant access settings > Organization settings and click on 'Add organization
Enter the tenant ID (or domain) of the tenant you wish to collaborate with and click on 'Add'
Verify/update outbound access B2B direct connect settings to the following:
1. Users and groups
  1. Access status
    1. Allow access
  2. Applies to
    1. All Users
2. External Applications
  1. Access status
    1. Allow access
  2. Applies to
    1. All applications

References: