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Can 1 User have multiple user principle name ,if user is in more than domain ?

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Consider situation where, office365 have more than 1 verified domains.  now at the time of creation of new user can i have userprinciple name for each domain for single user.  

i mean 1user and userprinciple name  for each domain. is it possible ?


Thank you!

Verified Answer
  • Hi sagar.bhingare,

    I fully understand your requirement. Currently, you can create two user with same alias or dispaly name. However, it will be a limitation on Exchange online and Lync online service. For example: you have created a user named user@domain.com. You can create a new user named  user@domian-01.com.

    Thanks, Neo Zhu

  • Hi sagar.bhingare

    Thanks for your reply. They are different (with different online ID and userID ). However, the user who use different UPN and same alias will cause the limiation when they using Lync online and Exchange online service.

    Thanks, Neo Zhu

All Replies
  • Hi sagar.bhingare,

    I fully understand your requirement. Currently, you can create two user with same alias or dispaly name. However, it will be a limitation on Exchange online and Lync online service. For example: you have created a user named user@domain.com. You can create a new user named  user@domian-01.com.

    Thanks, Neo Zhu

  • Hi sagar.bhingare,

    How are you doing? I am just writing to see if there is any progress on this issue. I do not mean to push you. I just want to ensure that you do not encounter any problems during the troubleshooting. Thank you.

    Neo Zhu

  • @Neo Zhu: Thank you for ur ans.  As u said  i can create user@domain.com & user@domain-01.com, but "user" in 1st and 2nd name r treated as same user or different user in office365 ?  if they r treated as 2 different user then their display name can't same, is it ?  OR if they r treated as a single user in Office365 then in user's detail i can see 2 UserPrinciplename for "user", is it ?

  • Hi sagar.bhingare

    Thanks for your reply. They are different (with different online ID and userID ). However, the user who use different UPN and same alias will cause the limiation when they using Lync online and Exchange online service.

    Thanks, Neo Zhu