Collaborate securely with anyone in Microsoft Teams

Leipzig, 03/12/2018 – Microsoft Teams, the hub for teamwork in Office 365, rolled out a new ability to facilitate collaboration. Previously, anyone with an Azure Active Directory (Azure AD) account could be added as a guest, from now on anyone with an email address can be added to a team in Microsoft Teams. This means that anyone with a business or consumer email account, such as, or others, can participate as a guest in Teams with full access to team chats, meetings and files.

Guest access is included with all Office 365 Business Premium, Office 365 Enterprise, and Office 365 Education subscriptions.


Capability in Teams Teams user in the organization Guest user
Create a channel
Team owners control this setting. 
Participate in a private chat 
Participate in a channel conversation 
Post, delete, and edit messages 
Share a channel file 
Share a chat file   
Add apps (tabs, bots, or connectors)   
Create tenant-wide and teams/channels guest access policies   
Invite a user outside the Office 365 tenant's domain
Team owners control this setting. 
Create a team   
Discover and join a public team   
View organization chart   


Enterprise-grade security and compliance

All guests in Teams are covered by the same compliance and auditing protection as the rest of Office 365. Guest accounts are added and securely managed within Azure AD through Azure AD B2B Collaboration. This enables enterprise-grade security, like conditional access policies for guest user access. Azure AD also uses adaptive machine learning algorithms and heuristics to detect anomalies and suspicious incidents, enabling mitigation or remediation actions, such as multi-factor authentication, to be triggered as appropriate.

In addition, with Azure AD, IT departments have unparalleled insight into the activities of external users in their organization through detailed sign-in and access reports. Admins can centrally manage how guests participate within their Office 365 environment and easily view, add, or revoke a guest’s access to the host tenant.

How it works

  • Select Add Members in the menu next to the team name.

    Invite a guest to a team (Source:

  • Then add the guest’s email address.

  • They will receive a welcome email message with information about the team and what to expect now that they're a member. If the guest doesn’t yet have a Microsoft Account associated with their email address, they will be directed to create one for free.

  • Once they accept the invitation, guests can participate in chats, join meetings, collaborate on documents, and more.

  • Text and icon give a clear indication of guest participation in a team.

Here you can find further information related to guest access in Microsoft Teams.

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