Communicate with an external Skype for Business user

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Contributor

In MS Teams, how do I communicate with a Skype for Business user not in my directory? Someone in another company? In Skype for Business, we just input their email address. Doing that in Teams under people, doesn't seem to ever result in anyone. I've already turned on globally the guest access feature of Teams.

60 Replies
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Hey Daniel, if you don't mind going and starting a new conversation with your issue so we can try to help figure it out so we don't take this thread into multiple directions. Thanks!
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Hi Oleg, 

 

I have the same issue up until now so yeah guess I will need to contact O365 support. 

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Hi Daniel, 

 

Guess we need to contact O365 support like how Oleg has advised. Have the same issue up until now when checked via all browsers

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Hello,

any Updates and Solutions available? We have a new Office 365 Tenant (January´19) and we can not Chat with external SfB Users.

External Access is enabled, Domain Whitelist is empty, TeamsUpgradePolicy is set to "TeamsOnly".

 

What I see is that in the Chat window I don´t have the Contact-Groups (Recent / Contacts) shown in the left top ot the Microsoft Teams Client. I have seen other MS Teams Clients from another Office 365 Tenant where those Contact-Groups are shown. Don´t know it this is a indicator for a missing Tenant-Update ot Tenant-Setting

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Hi,

I realized with Chromium Version 70.0.3538.102 it is not possible to open the "admin.teams.microsoft.com" page. With Chrom Version 71.0.3578.98 and latest Edge it was no problem at all. I hope this helps and we can concentrate to the external Issue.

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That’s odd. Are you on a gov cloud tenant by chance?
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Hi Chris,

no, that is not the Problem. It is a "normal" Office 365 Tenant (Corporate).

It works on my Teams client.

Just click on "new chat" tab and put the email address of the external user.

As the user is outside your organization. Some Teams features won't be available (content sharing for example) but chat, audio & video are OK.

Note that my Teams client is configured as a Tems only user

 

Hope it helps

 

 

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With Microsoft Support we figured out, that we had a missconfiguration on our external-DNS-Settings.

On hybrid Scenarios you have to keep ALL of your Skype for Business Server 2015 DNS-Entries to pointed to on premise. Our mistake was, that we point the lyncdiscover Entry to webdir.online.lync.com instead of the correct on Premise Reverse Proxy of the Pool-Server. After changeing this we was able to chat or do phone calls to external contacts via Teams. The only problem is that the communication will always endup on the federated company in Skype! Within this cross communication some features like sharing your desktop will not work. For this you need a Teams to Teams communication, like you have already with internal Users. And today the only workaround (which I know) is to invite your external contact to your Azure AD as a Guest-User. As soon the invited contact will follow the link and login with his own credentials to the invitatory O365-Tenant, this external contact will be treated like an internal user. In other words, we have a Teams-to-Teams communication, which is fully featured (sharing desktop included). Hopefully one day Microsoft will Teams allow to communicate with external users directly to Teams without hassling Guest-Status.

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@zrhoul: This is the same way I am doing. As you can see in my screenshot it is not working. My Tenant Policy (TeamsUpgradePolicy) is set to "TeamsOnly" and my client too.

 

My Chat Conversation starts in my MS-Teams-Client and I want to reach a external Skype for Business Online chat partner. This is only working when I change my Tenant Policy (TeamsUpgradePolicy) to "Islands" mode. Then my chat conversation is working, but not over the Teams-Client. On both sides the chat message appears in the SfB-Client and the conversation is not going over the MS-Teams-Client.

 

I can not believe that this is the solution. Also I can not believe that I have to create a Guest-Account in my O365 Tenant for every external Partner (that is crazy).

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The fact that you are also missing your meeting tab tells me your onprem exchange and I’m thinking that might be an issue. It’s just odd your missing your contacts etc. as well. I’m going to setup a user without exchange online and try federation and see what happens.

Also assume that the end point your testing with has external teams communications on? You can test with turismon@webbtech.org if you want a known working test federation endpoint.
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@Chris Webb: thanks for your Reply. You are right, actual we have Exchange onpremises. Perhaps this could be the Problem.
In Skype for Business Client it was possible to configure the Exchange Server onprem credentials for the Exchange Connection (contacts, calender).

 

My endpoint of my testing is using Skype for Business online and has the external communication on. I will test to chat with your provided account.

 

Thanks

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Where is your S4b home acount? 

By design, if your user is hybrid user with S4B user account on-prem then even in Islands mode the Teams client will not serve the federation, neither any Online depnedent feature. E.g. Audio Conference, Phone System, Video Interopt... 

I came across the same situation and we needed to migrate first user to S4B online then to TeamsOnly state and all these features also with external federation started to work in Teams. 

MicrosoftTeams-image (1).png
Here is quite good overview. Just check your current setup of user and what is possible and what is not: 
https://docs.microsoft.com/en-us/microsoftteams/coexistence-chat-calls-presence

 

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The SfB Account ist Online (Office 365). That is not the Problem.

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I tried to duplicate and I can't get my external settings to take on my new user at all. Wondering if something is going on with the Admin center and the Teams Only setting not taking properly via UI. When you set your user to Teams Only upgrade mode did you use the UI or powershell? If the UI try powershell and give it a bit and see if it matters.
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@Chris Webb: You are right. It seems to be a problem in the Admin Center UI. At the beginning of troubleshooting I managed the setting over Admin Center UI for Microsoft Teams. On Friday evening I changed the same settings over the PowerShell (TeamsOnly Mode) and when I were testing today afternoon, everything is working (Chat, Video, Audio) with external Users. Also I can now see the missing contact folders and can create own contact groups which I have missed when I started the Microsoft Teams Client the first time.

Thanks !

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@DaveChomi Thanks this site is what i was looking for. Helped me understand that Teams - Teams won't work if we run islands and recipient are running teams only. 

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how do you get to the admin center? @Keith Livingston 

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@Harrison HerschI may be late to the party here, but last time I tried this I also couldn't do it (not sure how long ago).  Now it works … just click on the Chat menu, click the new chat button (to the left of the search field), then paste your external email address and hit ENTER.  You will be asked if you want to search for an external user … at which point there's a warning that some features are not going to be available.  Good huh?

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@Bob Bradley I don't know how you got it to work, but it's not working as simply as that as of right now. To be exact, your method isn't working at all.