External access in the Teams admin center

Want to chat, call and meet in Teams with people from another organization, without making them guests in your team? Then you need external access (also called federation). This article explains the difference with guest access and how to set up external access.

External access or guest access?

External access in the Teams admin center

Set up external access

  1. Open the Teams admin center > Users > External access.
  2. Under Teams and Skype for Business users in external organizations, choose one of the options:
    • Allow all external domains (default),
    • Allow only specific external domains, or
    • Block only specific external domains.
  3. Add domains if needed, such as partner.com, and select Save.
Setting allowed and blocked domains
Adding an external domain

Teams users with a personal account

On the same page you decide whether your users can chat with people who use Teams with a personal Microsoft account, and whether those people can start a conversation themselves. Turn this off if you don't want contact with personal accounts.

Settings for Teams users with a personal account

Start an external chat

In Teams, select New chat and type the full email address of the external person. Choose Search externally. The chat gets an External label. Not working? The other organization must also allow external access for your domain. Changes can take a few hours. Also see join a Teams meeting as an external guest.

Starting a chat with an external user

Read also

How to add external guests in Microsoft Teams
Join a Microsoft Teams meeting as an external participant
Share a Teams message with people who don't use Teams

Nederlandstalige versie: Externe toegang instellen in Microsoft Teams


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