AAD Connect enable option "Exchange hybrid deployment"

Question

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

Answer 1

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

Answer 2

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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