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Collaborate with guests from other Microsoft 365 cloud environments

  • Straipsnis

Microsoft 365 organizations have one of several tenant types and are located in one of three Microsoft clouds:

Microsoft Azure cloud environment Microsoft 365 cloud environment
Microsoft Azure Commercial Commercial, GCC
Microsoft Azure Government GCC High, DoD
Microsoft Azure China China (21Vianet)

In order to invite guests from an organization in a different Microsoft Azure cloud environment, you must do the following:

  1. If the organization you want to collaborate with is in a different Microsoft Azure cloud environment (such as commercial and DoD), enable cross-tenant connections with that Microsoft Azure cloud environment.
  2. Set up cross-tenant access settings in Microsoft Entra ID with the organization that you want to collaborate with.

Note that tenants in Microsoft Azure Government (Microsoft 365 GCC High and DoD) can't create a cross-tenant connection with tenants in Microsoft Azure China.

Note

VDI clients aren't supported for cross-cloud guests.

B2B Member accounts aren't supported for cross cloud guests. All cross cloud users must be of type B2B guest.

Important

The organization that you're collaborating with must also configure these settings for their organization.

Prerequisites

Inviting guests from organizations in other Microsoft 365 cloud environments requires that guest access be configured for your organization. If you haven't previously configured guest access, see one of the following depending on your scenario:

Additionally, to enable B2B collaboration with an organization in a different Microsoft 365 cloud environment, you need the organization's tenant ID. If you know the fully qualified domain name of the other organization, you can look up the tenantID in the Teams admin center. Open meeting settings, select Lookup under Cross-cloud meetings, type in the fully qualified domain name, and select Show tenant ID.

For the best meeting experiences across Microsoft clouds, make sure your network is ready for Microsoft Teams. Prepare your organization's network for Microsoft Teams contains guidance on how to optimize your network for Teams. Also ensure that the necessary DNS, IPs and Ports are enabled for each of the M365 clouds where your users are collaborating. The following table links to the endpoint definitions for each of the M365 cloud environments:

Microsoft 365 Cloud Environment Endpoints
Commercial, GCC Worldwide endpoints
GCC High U.S. Government GCC High endpoints
DoD U.S. Government DoD endpoints
China (21Vianet) Microsoft 365 operated by 21Vianet

Allow cross-tenant connections with other Microsoft 365 cloud environments

If you're setting up guest sharing with a tenant that's in a different Microsoft Azure cloud environment than yours, then you need to enable connections with that cloud environment before you add the organizational relationship.

Enable the Microsoft Azure cloud environment you want to collaborate with in Microsoft Entra cross tenant access settings.

  1. Sign in to Microsoft Entra ID using a Security administrator account.

  2. Select External Identities, and then select Cross-tenant access settings.

  3. Select Microsoft cloud settings.

  4. Select the checkboxes next to the external Microsoft Azure cloud environments you want to enable.

    Screenshot showing Microsoft cloud settings.

Add an organization

Once you've enabled the cloud environments you want to collaborate with, you need to add the specific organizations with which you want to enable B2B collaboration. Unlike B2B collaboration with organizations in the same cloud environment, B2B collaboration with organizations in different Microsoft 365 cloud environments requires that each organization be added to Microsoft Entra cross-tenant access settings.

To add an organization

  1. Sign in to Microsoft Entra ID using a Security administrator account.
  2. Select External Identities, and then select Cross-tenant access settings.
  3. Select Organizational settings.
  4. Select Add organization.
  5. On the Add organization pane, type the tenant ID for the organization and press Enter. (Note that you can't search on domain names from other clouds.)
  6. Select Add.
  7. The organization appears in the organizations list. At this point, all access settings for this organization are inherited from your default settings.

New organizations inherit B2B collaboration settings from the default. If your default settings block B2B collaboration or if you want to limit collaboration to specific users or groups, update the organization's inbound and outbound settings.

Configure inbound settings for the organization

Use the inbound settings to specify which users or groups from the external organization can access resources in your organization.

To configure inbound settings for an organization

  1. Select the inbound access link for the organization that you want to modify.
  2. On the B2B collaboration tab, choose Customize settings.
  3. On the External users and groups tab, choose Allow access and All <organization> users and groups. (You can choose Select <organization> users and groups if you want to limit access to specific users and groups, such as those who have signed a non-disclosure agreement.)
  4. If you want to limit guest access to Microsoft 365, you can select the Office 365 application on the Applications tab.
  5. Select Save and close the Inbound access settings blade.
Configure outbound settings for the organization

Use the outbound settings to specify which users or groups from your organization can access resources in the external organization.

To configure outbound settings for an organization

  1. Select the outbound access link for the organization that you want to modify.
  2. On the B2B collaboration tab, choose Customize settings.
  3. On the Users and groups tab, choose Allow access and set an Applies to of all users, or select the users or groups that you want to allow to access the external organization.
  4. Select Save, choose Yes to confirm, and close the Outbound access settings blade.

Meet with people in other Microsoft 365 clouds

Configure Microsoft cloud settings for B2B collaboration

Configure cross-tenant access settings for B2B direct connect