Set up open federation to Teams

~ Vesa Nopanen

Teams external access configuration screen can be a bit confusing in case you don’t click the Learn more link to get more details.

If you add any domains to allowed list in this screen, you end up in a situation where a domain you haven’t added gets a notification:

So it is not a open federation. Looking at Learn more documentation you can find out why:

If you want open federation do following

  • Enable External Access
  • Enable Users can communicate with external Skype Users
  • Don’t add any domains to the list with Allow

Published by Vesa Nopanen

Principal Consultant and Microsoft MVP "They call me Mr. Teams." "Creating better worklife!" Virtual Events, Meetings and Collaboration are big letters in the word cloud of what I do and consult daily. My expertise area is Microsoft 365 / Microsoft Cloud , covering especially - Microsoft Teams and extending & integrating Microsoft Teams between systems in and out of Microsoft 365 - Power Platform: (Power Automate, Power Virtual Agents, Power Apps & Dataverse for Teams - SharePoint - and tools that create a modern workplace solution and practices. In my work I am also an adviser for customers so they can discover best benefits, gain best value & ROI out of chosen tools. I have 25+ years of experience in IT and worked with Office 365 since 2012. I am a speaker in various community events like Microsoft Ignite (2019, 2020, 2021), Teams Nation (known before as TeamsFest), Microsoft 365 Virtual Marathon, Commsverse, CollabDays, SharePoint Saturdays, Power Platform community,... and the list goes on. Community Events & User Groups I co-organize: - Teams Nation Community Conference & Monthly Meetups - Teams Community Finland (founder) #TeamsFi Let's connect!

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