M365 Changelog: Teams Cross Cloud Authenticated Meetings General Availability

MC672752 – Teams Cross Cloud Authenticated Meeting join (CCM) delivers the ability for a Teams user to join a meeting hosted in another cloud while signed into their account in their home tenant. This feature provides the meeting host the ability to validate the identities of meeting participants without granting those participants any access to the host tenant.

This message is associated with Microsoft 365 Roadmap ID 145460.

When this will happen:

Standard Release: This feature will be available in late September 2023.

How this will affect your organization:

This change only impacts your organization if there are configured cross tenant access settings between tenants in different Microsoft clouds and Teams Cross Cloud Meeting join is enabled for inbound and/or outbound connections. Once configured users will be able to join meetings hosted in different Microsoft clouds as authenticated users by signing in to their home tenant.

What you need to do to prepare:

If you are interested in using this feature, familiarize yourself with Azure Active Directory B2B and Cross Tenant Access Settings.

Client machines running Windows 10 must have KB5028166 installed.

Client machines running Windows 11 must have KB5028185 installed.

The following minimum client versions are required:

  • Windows Desktop Client:
  • Mac Desktop Client:
  • Android Client: 1416/
  • iOS Client: 5.12.0

Customers who apply strict firewall rules for access to M365 resources should review their existing rules to ensure communication with other Microsoft clouds has been enabled. IP address information for the various Microsoft clouds can be found here: Microsoft 365 endpoints – Microsoft 365 Enterprise | Microsoft Learn

Additional information