Add a guest to a team
The Microsoft Teams admin center is gradually replacing the Skype for Business admin center, and we're migrating Teams settings to it from the Microsoft 365 admin center. If a setting has been migrated, you'll see a notification and then be directed to the setting's location in the Teams admin center. For more information, see Manage Teams during the transition to the Teams admin center.
Anyone with a business or consumer email account, such as Outlook, Gmail, or others, can participate as a guest in Teams.
As an admin, you can add a new guest user to the organization in a couple of ways:
- Global admins or Teams admins and team owners add a guest to a team in the Teams clients or in the Teams admin center. To learn more, read Add guests to a team. If you haven't set up guest access yet, go through the steps in the Guest access checklist.
This does not apply when Admins and users in the guest inviter role can invite is enabled. This is because the guest inviter role isn't supported in Teams.
- Add guests to your organization through Azure Active Directory (Azure AD) B2B collaboration. Azure AD B2B collaboration allows a global admin to invite and authorize a set of external users by uploading a comma-separated values (CSV) file of no more than 2,000 lines to the B2B collaboration portal. For more details, check out Azure Active Directory B2B collaboration.
With Azure AD B2B collaboration, organizations can enforce conditional access and multi-factor authentication (MFA) policies for B2B users. These policies can be enforced at the tenant, app, or individual user level, the same way that they are enabled for full-time employees and members of the organization. Such policies are enforced at the resource organization. For more information, see Conditional access for B2B collaboration users. Individual guest users can't be blocked.
Guest users you have already added via Azure AD B2B, Office 365 Groups, or SharePoint Online are ready to go. The Office 365 admin or a team owner can add those guests to their respective teams. If a team is already with an Office 365 group, and a guest is added to the group, the guest will get access to the team. Adding a guest via the Office 365 group doesn't generate an invitation email to the guest, so someone on the team should notify the guest.
You can track guest additions in Azure AD or the Office 365 Security & Compliance Center. Adding a guest in Microsoft Teams is audited and logged as an Azure AD group administration activity "Added member to group". For more details, see Auditing and reporting a B2B collaboration user and Search the audit log in the Office 365 Security & Compliance Center.