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nitishkanann23's avatar
nitishkanann23
Copper Contributor
Aug 27, 2020
Solved

MS Teams External Chat not working

Hi,

 

I have been chatting with external users (clients) of different domains from my organizational account. Suddenly, this has stopped working. Instead of an 'External' tag next to their name, Now I see the user as 'Unknown'. The more worrying this, I still get the messages from them, but I'm not able to reply to them.

 

Can someone help me with this. Thanks in advance!

  • MastBob's avatar
    MastBob
    Jun 30, 2021

    yes in my post above I posted a command to clear all those locators. I think it was this one :

    Get-ADUser -Filter {msRTCSIP-DeploymentLocator -like "SRV*"} |
    Set-ADUser -Clear msRTCSIP-DeploymentLocator

    http://terenceluk.blogspot.com/2020/11/powershell-script-for-clearing-msrtcsip.html

    you can always try 1 account with the AD attribute editor and see if it works before dooing the command on all users. ( don't forget to sync to the cloud)

    Dooing a logout + login cycle for teams on the users computer might be required.

     

    If not you can make a case with O365 support but I solved it myself before they had any decent info

     

    no idea why this happens but in my case the Skype on prem server crashed before we could decommission properly.

  • MastBob's avatar
    MastBob
    Copper Contributor

    nitishkanann23 

    We have a similar problem. We have this workaround for the problem : 

     

    Click on the name above in the chat, write a message in that chat window. This should work. 

     

     

    We have a MS case open for this problem but this workaround makes it less of a problem for us.

     

    Do you have exchange on premise or/and used skype on premise?

    Is teams only set to "teams only" ?

  • Hi,

     

    Are you the only one in your organisation with this problem or are there more users with the same problem? If there is changes made by your administrator for Teams I suggest that you report this to Microsoft Support via the Office 365 admin portal.

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