Decomission Exchange 2010,AAD connect

fsdg 881 Reputation points
2022-06-23T11:01:58.237+00:00

Hello,

Exchange 2010 onprem. 0 mailboxes
M365 tenant.50 mailboxes
AAD connect server.50 user accounts synced to Azure AD.
No hybrid connectors.

I want to disable AD synchronization and have duplicate AD accounts.
Is this all what I need to do?
https://www.slashadmin.co.uk/office-365-what-happens-when-you-disable-ad-connect/
After removing sync,wait for 72h,decomission Exchange 2010 and mailboxes will work fine after that?

Thank you

Microsoft Exchange Hybrid Management
Microsoft Exchange Hybrid Management
Microsoft Exchange: Microsoft messaging and collaboration software.Hybrid Management: Organizing, handling, directing or controlling hybrid deployments.
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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.
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Accepted answer
  1. KyleXu-MSFT 25,616 Reputation points
    2022-06-24T01:26:51.3+00:00

    @fsdg

    You could follow this article to uninstall the last Exchange server and stop AAD sync: Scenario one

    You could disable AAD Connector in the step 7:
    214561-1.png

    Then uninstall Exchange on-premises server in the step 8.


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