After Restore Mailbox, Directory on AD Azure to AD onprem not synced

lucky alqodar 41 Reputation points
2021-10-22T06:52:04.79+00:00

I have Active Directory server on-premise, and exchange online in office 365, they are connected to each other using the free version of the ad azure connect server.

I delete the AD user and their mailbox, when I restore the mailbox, the AD User does not join the restore. how do restore AD user to stay connected to exchange online mailbox in office 365?

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  1. KyleXu-MSFT 26,211 Reputation points
    2021-10-25T02:16:00.973+00:00

    @lucky alqodar

    For local AD account, you cannot recover it. But you could recreate a new account to reconnect to Azure AD account:

    1. The the logon name for Azure AD account:
      143187-qa-kyle-10-05-14.png
    2. Add this domain name to local AD from "Active Directory Domains and Trusts":
      143118-qa-kyle-10-08-23.png
    3. Create a new AD account with the Azure account logon name:
      143203-qa-kyle-10-10-56.png
    4. Add "SMTP:OnlineTUserName@keyman .onmicrosoft.com" and "smtp:OnlineUserName@keyman .mail.onmicrosoft.com" to this local AD account proxy email address attributes.
    5. Run "Start-ADSyncSyncCycle -PolicyType Delta" on your AAD Connect server to update configuration.

    After that, this Azure account will connect and sync to local AD account. For more detailed information, you could have a look about this article.
    Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.

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