Guest access — Allows users from outside the organization to become nearly full-fledged team members who can make calls, participate in chats, set up meetings and access shared files. Team owners can add guests on an individual basis. Use guest access when you want to grant an external user access to the same Teams activities, channels and shared resources as native team members.
Guest access is a tenant-wide capability in Teams that is disabled by default.
When guest access is enabled, anyone outside your organization who has a business or consumer email account can become a guest. Eligible guests receive an email invitation from the team owner. Once they redeem the invitation by clicking Open Microsoft Teams, they get added to the team with guest user permissions.
Guests can chat, make calls and participate in channel conversations. They can also create channels and share files. However, guests don’t have access to other functions available to team members of the organization, like OneDrive for Business and the Teams calendar.
Team owners can add as many guests as they wish, up to the limit defined by your Azure Active Directory (Azure AD) license. Guest access is governed by service limits in Azure AD and Microsoft 365 (formerly known as Office 365).
For security, Microsoft covers Teams guest accounts with the same compliance and auditing protection used elsewhere in Microsoft 365.
Guest access in Teams requires configuring other settings in Microsoft 365, including settings in Azure AD, Microsoft 365 Groups, and SharePoint. If you're ready to start inviting guests to teams, read one of the following:
- To configure guest access for Teams for general use, see Collaborate with guests in a team.
- To collaborate with a partner organization that uses Azure Active Directory and allow guests to self-enroll for team access, see Create a B2B extranet with managed guests.
Guest access in Teams is an organization-wide setting and is turned off by default. You can control guest access to individual teams by using sensitivity labels.
How a guest becomes a member of a team
- A team owner or a Microsoft 365 admin adds a guest to a team.
- The guest receives a welcome email from the team owner, with information about the team and what to expect now that they're a member.
- The guest accepts the invitation. Guest users who have an work or school account in Azure Active Directory can accept the invitation and authenticate directly. Other users are sent a one-time pass code to validate their identity (One-time passcode authentication required).
- After accepting the invitation, the guest can participate in teams and channels, receive and respond to channel messages, access files in channels, participate in chats, join meetings, collaborate on documents, and more.
In Teams, guests are clearly identified. A guest user's name includes the label (Guest), and a channel includes an icon to indicate that there are guests on the team. For more details, see What the guest experience is like.
Guests can leave the team at any time from within Teams. For details, see How do I leave a team?
Leaving the team doesn't remove the guest account from your organization's directory. This must be done by a Microsoft 365 global admin or an Azure AD admin.
Licensing for guest access
Guest access is included with all Microsoft 365 Business Standard, Microsoft 365 Enterprise, and Microsoft 365 Education subscriptions. No additional Microsoft 365 license is necessary. Teams doesn't restrict the number of guests you can add. However, the total number of guests that can be added to your tenant may be restricted by the paid features of Azure AD.