Enable B2B external collaboration and manage who can invite guests
This article describes how to enable Azure Active Directory (Azure AD) B2B collaboration and determine who can invite guests. By default, all users and guests in your directory can invite guests even if they're not assigned to an admin role. External collaboration settings let you turn guest invitations on or off for different types of users in your organization. You can also delegate invitations to individual users by assigning roles that allow them to invite guests.
Configure B2B external collaboration settings
With Azure AD B2B collaboration, a tenant admin can set the following invitation policies:
- Turn off invitations
- Only admins and users in the Guest Inviter role can invite
- Admins, the Guest Inviter role, and members can invite
- All users, including guests, can invite
By default, all users, including guests, can invite guest users.
To configure external collaboration settings:
Sign in to the Azure portal as a tenant administrator.
Select Azure Active Directory.
Select External Identities > External collaboration settings.
On the External collaboration settings page, choose the policies you want to enable.
- Guest users permissions are limited: This policy determines permissions for guests in your directory. Select Yes to block guests from certain directory tasks, like enumerating users, groups, or other directory resources. Select No to give guests the same access to directory data as regular users in your directory.
- Admins and users in the guest inviter role can invite: To allow admins and users in the "Guest Inviter" role to invite guests, set this policy to Yes.
- Members can invite: To allow non-admin members of your directory to invite guests, set this policy to Yes.
- Guests can invite: To allow guests to invite other guests, set this policy to Yes.
- Enable Email One-Time Passcode for guests (Preview): For more information about the one-time passcode feature, see Email one-time passcode authentication (preview).
- Collaboration restrictions: For more information about allowing or blocking invitations to specific domains, see Allow or block invitations to B2B users from specific organizations.
If Members can invite is set to No and Admins and users in the guest inviter role can invite is set to Yes, users in the Guest Inviter role will still be able to invite guests.
Assign the Guest Inviter role to a user
With the Guest Inviter role, you can give individual users the ability to invite guests without assigning them a global administrator or other admin role. Assign the Guest inviter role to individuals. Then make sure you set Admins and users in the guest inviter role can invite to Yes.
Here's an example that shows how to use PowerShell to add a user to the Guest Inviter role:
Add-MsolRoleMember -RoleObjectId 95e79109-95c0-4d8e-aee3-d01accf2d47b -RoleMemberEmailAddress <RoleMemberEmailAddress>
See the following articles on Azure AD B2B collaboration: