--- title: Cross-Tenant Outbound Domain Addition description: This guide will show an administrator how to allow internal users access to external resources tied to a desired domain. --- [Skip to content](https://knowledge.sittadel.com/cross-tenant-outbound-domain-addition#main-content) [![Sittadel-Logo-Icon-Slim-Large-Square-Green-Transparent copy](https://knowledge.sittadel.com/hs-fs/hubfs/Sittadel-Logo-Icon-Slim-Large-Square-Green-Transparent%20copy.png?width=55&height=55&name=Sittadel-Logo-Icon-Slim-Large-Square-Green-Transparent%20copy.png)](https://sittadel.com/) - [About Sittadel](https://sittadel.com/about/) - [Capabilities](https://sittadel.com/capabilities/microsoft-office365-azure-security/) Show submenu for Capabilities - [Microsoft Security Architecture](https://sittadel.com/capabilities/microsoft-office365-azure-security/) - [Detection & Response](https://sittadel.com/capabilities/managed-detection-and-response/) - [Employee Training](https://sittadel.com/capabilities/security-awareness-training/) - [Security Risk Advisors](https://sittadel.com/capabilities/virtual-information-security-officer/) - [Resources](https://sittadel.com/resources/) - [Knowledge Base](https://knowledge.sittadel.com/) Open main navigation Close main navigation - [About Sittadel](https://sittadel.com/about/) - [Capabilities](https://sittadel.com/capabilities/microsoft-office365-azure-security/) Show submenu for Capabilities - [Microsoft Security Architecture](https://sittadel.com/capabilities/microsoft-office365-azure-security/) - [Detection & Response](https://sittadel.com/capabilities/managed-detection-and-response/) - [Employee Training](https://sittadel.com/capabilities/security-awareness-training/) - [Security Risk Advisors](https://sittadel.com/capabilities/virtual-information-security-officer/) - [Resources](https://sittadel.com/resources/) - [Knowledge Base](https://knowledge.sittadel.com/) - [Get Sittadel](https://sittadel.com/start/) [Get Sittadel](https://sittadel.com/start/) Find answers to your security questions. - There are no suggestions because the search field is empty. 1. 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[Entra ID](https://knowledge.sittadel.com/azure-portals?hsLang=en#entra-id) # Cross-Tenant Outbound Domain Addition ## This guide will show an administrator how to allow internal users access to external resources tied to a desired domain. ### **![](https://knowledge.sittadel.com/hs-fs/hubfs/image-png-Jan-19-2024-04-04-16-2156-PM.png?width=125&height=133&name=image-png-Jan-19-2024-04-04-16-2156-PM.png)Role Requirements** Procedure Scope: **Administrators** Required Group Membership: **Admin.Collaboration** ### **![](https://knowledge.sittadel.com/hs-fs/hubfs/image-png-Jan-19-2024-04-13-05-5511-PM.png?width=125&height=148&name=image-png-Jan-19-2024-04-13-05-5511-PM.png)** ### **Handbook Reference** Package: **Collaboration Security** Domain: **B2B Collaboration Management** Modifies:**Allowed Outbound B2B Organizations** **![](https://knowledge.sittadel.com/hs-fs/hubfs/image-png-Jan-19-2024-04-29-09-3760-PM.png?width=670&height=5&name=image-png-Jan-19-2024-04-29-09-3760-PM.png)** **Tenant Collaboration Outbound B2B Domain Addition** 1. Navigate to the [Cross-Tenant Access Settings – Azure Active Directory](https://portal.azure.com/#view/Microsoft_AAD_IAM/CompanyRelationshipsMenuBlade/~/CrossTenantAccessSettings) portal, from the **Organizational Settings** tab locate and select the external organization entry from the listed below, select the **Inherited from Default** item under the **Outbound Access** column for the entry. ![](https://knowledge.sittadel.com/hs-fs/hubfs/image-png-Feb-26-2025-01-53-29-3435-PM.png?width=670&height=360&name=image-png-Feb-26-2025-01-53-29-3435-PM.png) 2. Select the **B2B Collaboration** tab, followed by **Customize Settings**. Select **Allow Access** for the **External Users and Groups** tab, make sure to also select **Allow Access** for the **External Applications** tab. Select **Save** at the bottom of the page to finalize the addition. ![](https://knowledge.sittadel.com/hs-fs/hubfs/image-png-Feb-26-2025-01-54-01-6046-PM.png?width=670&height=359&name=image-png-Feb-26-2025-01-54-01-6046-PM.png) ### Need Assistance? Reach out to your Customer Success Manager to discuss how a Sittadel cybersecurity analyst can assist in managing these tasks for you. New to our services? 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