Account merge

Sree 1,971 Reputation points
2021-09-03T14:32:25.243+00:00

some users whose mailboxes are present both on-prem (Exchange) and Exchange Online (O365). And as a result of this, such affected user sees different emails when logged in either with the on-prem link or with the outlook O365 link.

Can such account be merged as one?

Microsoft Exchange Online Management
Microsoft Exchange Online Management
Microsoft Exchange Online: A Microsoft email and calendaring hosted service.Management: The act or process of organizing, handling, directing or controlling something.
4,320 questions
Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
7,440 questions
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Accepted answer
  1. KyleXu-MSFT 26,226 Reputation points
    2021-09-06T02:00:55.21+00:00

    @JustinMicheal-7973
    You cannot merger those mailboxes content directly. You need to backup Exchange online mailbox content, then clean Exchange online mailbox object:

    Connect-ExchangeOnline  
    Set-User user@domain.onmicrosoft.com -PermanentlyClearPreviousMailboxInfo   
    

    In this way, those two mailboxes will be connected. You can import data to the Exchange on-premises mailbox.
    For more detailed information, you could have a look about this article: A user has one mailbox in Office 365 and one in an on-premises Exchange


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