AAD Connect enable option "Exchange hybrid deployment"

Leo Johnson 151 Reputation points
2021-01-11T14:31:23.523+00:00

Hi all,

Our service provicer told us we need to change the AD Connect tool to enable the option: "Exchange hybrid deployment".

Is this change with any risk?

Leo

Exchange | Hybrid management
Microsoft Security | Microsoft Entra | Microsoft Entra ID
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  1. Andy David - MVP 157.8K Reputation points MVP Volunteer Moderator
    2021-01-11T14:34:35.3+00:00

    Every change has risk :)

    But no, this is a pretty easy and common option. And if you need to do it, then you really have no alternative :)

    Here are the attributes synced once enabled
    https://learn.microsoft.com/en-us/azure/active-directory/hybrid/reference-connect-sync-attributes-synchronized#exchange-online

    and written back to on-prem

    https://learn.microsoft.com/en-us/azure/active-directory/hybrid/reference-connect-sync-attributes-synchronized#exchange-hybrid-writeback

    Troubleshooting usually involves permissions:

    https://learn.microsoft.com/en-us/azure/active-directory/hybrid/how-to-connect-configure-ad-ds-connector-account

    2 people found this answer helpful.

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  1. Joyce Shen - MSFT 16,701 Reputation points
    2021-01-12T02:50:59.687+00:00

    Hi @Leo Johnson

    Andy has given quite helpful reply about your question.

    The Exchange hybrid deployment feature allows for the coexistence of Exchange mailboxes both on-premises and in Microsoft 365. Azure AD Connect synchronizes a specific set of attributes from Azure AD back into your on-premises directory.

    And here is also a related thread discussed about the similar question: Azure AD Connect and "Exchange hybrid deployment" write-back

    The official document which introduces about Azure AD Connect: Accounts and permissions for your reference as well


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