Decomission Exchange 2010,AAD connect

fsdg 881 Reputation points


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?
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.
1,238 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.
6,098 questions
{count} votes

Accepted answer
  1. KyleXu-MSFT 25,616 Reputation points


    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:

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

    If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
    Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

    No comments

1 additional answer

Sort by: Most helpful