Manage Companies Users Can Share SharePoint Sites With

Use this operation to add or remove cross-tenant collaboration domains for SharePoint site sharing.

Role Requirements

Procedure Scope: Administrators

Required Group Membership: Admin.Collaboration

Handbook Reference

Package: Collaboration Security

Domain: TBD

Modifies: TBD

When to Perform this Operation

As Needed: Proactive or in Response to User/Security

Technical Description and Importance

Managing sanctioned inbound cross-tenant organizations, collaboration domains, and document collaboration domains ensures controlled and secure sharing of SharePoint sites with approved external organizations. This practice helps maintain a clear boundary between authorized and unauthorized external collaboration while supporting business operations. By adding or removing companies to this list, administrators can uphold compliance with organizational data-sharing requirements and reduce the risk of inadvertent data exposure. Regular review and updates to these configurations facilitate seamless, secure collaboration with external partners.

Management Options

• Add a Company
• Remove a Company

Add a Company

Purpose
Add a cross-tenant organization or domain to the sanctioned lists for inbound sharing and SharePoint collaboration.
Use Case
A new external partner needs access to a SharePoint site for collaboration on a shared project.

Remove a Company

Purpose
Remove a cross-tenant organization or domain from the sanctioned lists to stop ongoing access.
Use Case
A former partner's access needs to be revoked to secure internal resources.

Operation	Action	Target
Add a Company	Addition	Sanctioned Inbound Cross-Tenant Organizations, Sanctioned Collaboration Domain, Sanctioned Document Collaboration Domains
Remove a Company	Removal	Sanctioned Inbound Cross-Tenant Organizations, Sanctioned Collaboration Domain, Sanctioned Document Collaboration Domains

Add a Company

This operation adds a cross-tenant organization or domain to sanctioned lists, enabling SharePoint sharing with external users.

       1. Cross-Tenant Domain Addition

       2. Cross-Tenant Domain Inbound Access Addition

       3. Entra ID Collaboration Domain Addition

       4. SharePoint Collaboration Domain Addition

Remove a Company

This operation removes a cross-tenant organization or domain from sanctioned lists, revoking SharePoint sharing permissions.

       1. Cross-Tenant Domain Removal

       2. Cross-Tenant Domain Inbound Access Removal

       3. Entra ID Collaboration Domain Removal

       4. SharePoint Collaboration Domain Removal

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