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arifC's avatar
arifC
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Mar 10, 2020

Service principal account now shown as "Unknown User" in Team

My customer uses a service principal account to provision a team. This account was always invisibile in the member/owner list of the team. Now we see the account as "Unknown User" in a Team and even worse the team members see that an "Unknown User" joined the team (screenshot is in German):

Are there any recent changes to Teams or the Office 365 Group I should know of?

All advice is appreciated!

12 Replies

  • harvey-h10's avatar
    harvey-h10
    Copper Contributor

    For anyone still experiencing this. I had this today and turned out that the problem went away when I disabled the Skype for business license for the user.

    • DJMACESA's avatar
      DJMACESA
      Copper Contributor

      Yip we are also still having this problem.

       

      Looked for the TM Number but unable to find it under history as well.

      • rwd-slo's avatar
        rwd-slo
        Copper Contributor

        We are getting the same issue, at the moment I am putting it down to a provisioning issue.

         

        Our staff members can add a large bunch of users to the team they have created e.g. 25, then the last 5 when they search for them get a list of unknown_user.

         

        However as tenant admin, I can go in and add the ones they can't do by hand without issue.


  • devjhorst's avatar
    devjhorst
    Copper Contributor

    Hi arifC,

    Microsoft has posted a new advisory under http://admin.microsoft.com/Adminportal/Home#/servicehealth about the Unknown user in Teams. You can find it by looking for the ID "TM206109". This is how the message looks:

     

    Let's hope that the upcoming hotfix will solve the issue!

    Regards,
    Jarbas

    • EliasGro's avatar
      EliasGro
      Copper Contributor
      Spoiler
       

      devjhorst and solution to this problem? I invited two guests to a team and they appear as "Unknown User"

       

      Elias

      • devjhorst's avatar
        devjhorst
        Copper Contributor

        Hello EliasGro,

         

        the bug related to service principal and unknown user in Teams should be fixed. According to your description, you are seeing "Unknown Users" when adding guests to a team which seems to be a different topic. I found a similar discussion here. Maybe you could check it out 😀 

         

        I hope it helps.


        Regards,
        Jarbas

  • arifC +1, I also experienced the same behavior today as here: The SPN is shown as Unknown User now.

     

    SPN is now shown as Unknown User (in Teams only)

  • Maarten_VITO's avatar
    Maarten_VITO
    Copper Contributor

    We have this behavior as well on our tenant.
    All Teams are created with the Service Account, but the "unknown user" is only added in what looks like a random subset of the available Teams.

    It is possible to remove the Service Account via Azure (it has owner rights). Functionality stays the same after that. So far as I know there is no reason for a service account to have owner rights in an Office365 Group. So it is strange that it is showing up now.

    Even worse, the message "Unknow User Joined the Team", doesn't work in favor of a secure environment for our users.

  • Hello, we are facing the same issue in our organization.
    Any update from Microsoft would be appreciated.
  • Bart-Jan_Dekker's avatar
    Bart-Jan_Dekker
    Copper Contributor

    arifC  We are seeing the same thing since this morning with every team that was created by a service account. No idea what happened, but probably something changed on the side of Microsoft 

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