MS Teams federation between organisations

Question

Hello,

I am trying to setup federation between my and partner organisation. Federation request was completed on our side, however the other side is saying that due to M365 subscription they use, they have no access to MS Teams administration.

If this is the case, and providing there are no restrictions on our side, should it be working straight away, or their plan might have federation disabled completely?

They are also suggesting setting up guest access for concerned engineers as federation work around. Will this work?

Answer 1

Hi @Oleg

Teams supports collaboration with people outside your organization using guest access and external access.

• External access - A feature that allows users to find, call, and chat with people who have Microsoft identities, including those from other organizations.
• Guest access - A feature that allows you to invite people from outside your organization to join a team. Guests can also call, chat, and meet with people in your organization and you can share files and folders with them. Invited people get an Microsoft Entra B2B collaboration guest account in your directory.

Using the external access feature in Teams, you can allow users in your organization to chat and meet with people outside your organization who use Microsoft as an identity provider. If you want people from outside your organization to access your teams or other Microsoft 365 resources, you do need to configure guest access at the same time, please refer to Collaborate with guests in a team or Collaborate with external participants in a shared channel.

For steps to configure organization settings and user policies for external access, please refer to

https://learn.microsoft.com/en-us/microsoftteams/trusted-organizations-external-meetings-chat?tabs=organization-settings#organization-settings-and-user-policies-for-external-access

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