Forum Discussion
"We can't setup the conversation because your organizations are not setup to talk to each other"
Looks like I found the issue. When I did a Get-CsTenantFederationConfiguration, the AllowedDomains setting was blank. I added "AllowAllKnownDomains" and chat is working now.
https://www.thirdtier.net/2020/04/10/microsoft-teams-does-not-allow-remote-users-to-connect/
I think this setting was inherited from our Skype for Business configuration which had federation disabled, but that is a guess. Our tenant is still in Islands mode, target is Teams only, and I'm able to chat with them now.
Nothing in the allow/disallow list. I get the feeling both tenants need to be in Teams only mode.
I had this working previously in Islands mode, but I had to go into the Skype for Business Admin Center and allow external communication. That no longer exists, so I may need Powershell to check status. We're going to Teams Only mode in less than 30 days, so I'll see what happens then.
Joe McGowan And how does the other tenant settings look like? You don't necessarily have to be Teams-only as the table I sent shows.
I read your initial post again, you are correct in your scenario in that way that it can ONLY be a Teams RECIPIENT.
Federated routing for new chats or calls
https://docs.microsoft.com/en-us/microsoftteams/coexistence-chat-calls-presence#federated-routing-for-new-chats-or-calls
Joe McGowan See above 🙂
Its just not working. I opened a Microsoft support case.
Joe McGowan Just have to ask, have you verified the settings with the other tenant? Doesn't matter if it's only yours that's all good. Just a "note" from the docs:
If you and another user both turn on external access and allow one another's domains, this will work. If it doesn't work, the other user should make sure their configuration isn't blocking your domain.
https://docs.microsoft.com/en-us/microsoftteams/manage-external-access
Just in case you haven't been there already.