Disconnected Exchange 2016 mailboxes not showing up

Matt Moriarty 1 Reputation point
2020-11-11T14:02:31.683+00:00

I am trying to migrate several linked mailboxes INTO our main domain. My current process is to:

Identify the MailDB and GUID of the mailbox to be moved
Disable the linked mailbox user
Run Update-StoreMailboxState -Database <MailDB> -Identity <MailGUID> with the database and GUID of the mailbox
Re-connect the mailbox to the new AD User object.

However, the disconnected mailbox does not show up for quite some time (several hrs in some tests I've run) which I cannot explain.

Does anyone have any ideas please?

Exchange | Exchange Server | Management
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  1. Eric Yin-MSFT 4,396 Reputation points
    2020-11-12T01:53:44.2+00:00

    Run the following command to ensure if the mailbox exists in the database:

    Get-MailboxDatabase | foreach {Get-MailboxStatistics -Database $_.name} | where {$_.DisplayName -eq "<display name>"} | Format-List DisplayName,Database,DisconnectReason  
    

    During which step did you find the mailbox not showing up?


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