How to change a Mailbox Id,Identity, Name ?

Question

For whatever reason, one mailbox in an Office 365 tenant has the name/Id/Identity/CN set as "admin". I would like to change that to be like the other mailboxes. How can I do this?&nbsp;&nbsp;Get-Mailbox -Identity admin | fl *name*,Id*&nbsp;SamAccountName :&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;admin56315-149665953UserPrincipalName :&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; firstname.lastname@domain.comDisplayName :&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Firstname LastnameSimpleDisplayName :&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;Name :&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; adminDistinguishedName :&nbsp; &nbsp; &nbsp;CN=admin,OU=domain.onmicrosoft.com,OU=Microsoft Exchange Hosted Organizations,DC=redacted,DC=PROD,DC=OUTLOOK,DC=COMIdentity :&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; adminId :&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;admin&nbsp;See further below what all the other mailboxes look like.Problem is that when I select that mailbox, i.e. in Exchange Admin Center to be added to a group or similar, I see not the DisplayName, but "admin".&nbsp; &nbsp;ThanksDan&nbsp;&nbsp;Other mailboxes show:SamAccountName :&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;chris555411804579053UserPrincipalName :&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; firstname2.lastname2@domain.comDisplayName :&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Firstname2 Lastname2SimpleDisplayName :Name :&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; firstname.lastnameDistinguishedName : CN=firstname.lastname,OU=sgaim.onmicrosoft.com,OU=Microsoft Exchange Hosted Organizations,DC=redacted,DC=PROD,DC=OUTLOOK,DC=COMIdentity :&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp;firstname2.lastname2Id :&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;firstname2.lastname2&nbsp;

vasilmichev · Accepted Answer

Simply use the Set-User cmdlet, Set-Mailbox should also do. Or if you are synchronizing from on-premises AD, make the changes there.

Forum Discussion

How to change a Mailbox Id,Identity, Name ?

2 Replies

Resources