Microsoft Entra: Cross-tenant security group synchronization

Microsoft Entra introduces cross-tenant security group synchronization, enabling centralized management and shared access across tenants. Public Preview starts late January 2026; general availability in late April 2026. Admins must opt in and configure attribute mappings and access policies. No compliance issues identified. We’re introducing cross-tenant group synchronization, a new capability that enables organizations to synchronize security groups across Microsoft Entra tenants. This feature simplifies collaboration scenarios by allowing shared access to resources across tenants while maintaining centralized group management. It also streamlines administration of multiple tenants by centralizing group membership control, reducing duplication and manual overhead. This message is associated with Microsoft 365 Roadmap ID 518221. When this will happen Public Preview: Rollout begins in late January 2026 and completes by late January 2026. General Availability (Worldwide, GCC, GCC High, DoD): Rollout begins in late April 2026 and completes by late April 2026. How this affects your organization Who is affected: Admins managing Microsoft Entra tenants who want to enable cross-tenant group synchronization. What will happen: No impact unless you opt in during Public Preview. Admins can enable synchronization by updating attribute mappings. Cross-tenant access policies in the target tenant must allow group synchronization. What you can do to prepare Identify groups that require synchronization into other tenants. Collaborate with admins of other tenants to align on supported scenarios and business processes. Review and update attribute mappings and cross-tenant access policies as needed. Learn more: Configure cross-tenant synchronization – Microsoft Entra ID | Microsoft Learn Compliance considerations No compliance considerations identified. Review as appropriate for your organization. Message ID: MC1198077

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