Manage Companies Users Can Share SharePoint Sites With

Use this operation to add or remove external organizations that users can share SharePoint sites with.

Role Requirements

Procedure Scope: Administrators

Required Group Membership: Admin.Collaboration

Handbook Reference

Package: Collaboration Security

Domain: B2B Collaboration Management

Modifies: Allowed Inbound B2B Organizations, Allowed B2B Guest Invitation Domains

When to Perform this Operation

As Needed: Proactive or in Response to User/Security

Technical Description and Importance

Managing allowed inbound B2B organizations and guest invitation domains ensures that SharePoint sharing is restricted to approved external entities. By carefully controlling which organizations users can invite and collaborate with, this process helps maintain oversight over external data access and minimizes the risk of unauthorized sharing. Maintaining an updated list of allowed domains ensures that business collaborations remain seamless while supporting compliance with data governance policies. Routine management of these domains reduces exposure to potential security risks associated with external data sharing.

Management Options

• Add a Domain for Inbound B2B
• Remove a Domain from Inbound B2B

Add a Domain for Inbound B2B:

Purpose
Add a domain to the list of approved external organizations for inbound B2B collaboration and guest access.
Use Case
A new business partner requires access to SharePoint sites, and their domain needs to be added to the approved list.

Remove a Domain from Inbound B2B:

Purpose
Remove a domain from the allowed inbound B2B organizations list to prevent further collaboration.
Use Case
A former business partner should no longer have access to shared SharePoint resources, so their domain must be removed.

Operation	Action	Target
Add a Domain for Inbound B2B	Addition	Allowed Inbound B2B Organizations, Allowed B2B Guest Invitation Domains
Remove a Domain from Inbound B2B	Removal	Allowed Inbound B2B Organizations, Allowed B2B Guest Invitation Domains

Add a Domain for Inbound B2B

This operation adds a domain to the list of allowed inbound B2B organizations, enabling collaboration with users from that domain.

       1. Cross-Tenant Domain Addition

       2. Cross-Tenant Domain Inbound Access Addition

       3. Entra ID Collaboration Domain Addition

Remove a Domain from Inbound B2B

This operation removes a domain from the list of allowed inbound B2B organizations, restricting collaboration with users from that domain.

       1. Cross-Tenant Domain Removal

       2. Cross-Tenant Domain Inbound Access Removal

       3. Entra ID Collaboration Domain Removal

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