Entra ID Connect and Exchange Hybrid setting checkbox?

EnterpriseArchitect 4,871 Reputation points

I am using Hybrid Azure AD and Entra ID with Password Hash Sync, all objects are synchronized using the Azure AD Connect software.

There are 2x Exchange Server 2016 but both have no mailboxes on-premise only used for managing the AD attributes as I cannot decommission it

Is the below check box required for me to enable or not?

User's image

Thank you in advance.

Microsoft Exchange Online
Microsoft Exchange Online Management
Microsoft Exchange Online Management
Microsoft Exchange Online: A Microsoft email and calendaring hosted service.Management: The act or process of organizing, handling, directing or controlling something.
4,250 questions
Microsoft Entra
Microsoft Entra ID
Microsoft Entra ID
A Microsoft Entra identity service that provides identity management and access control capabilities. Replaces Azure Active Directory.
19,846 questions
{count} votes

1 additional answer

Sort by: Most helpful
  1. akinbade abiola 1,655 Reputation points

    Hello EnterpriseArchitect,

    Thanks for your question.

    With your description that there is no sync of anything from exchange on-prem, If there is no need for any mail sync, you do not need to enable this. However pls note the synced attributes here for exchange:


    As well as those written back:


    These can further assist in determining your use case for this.

    Please let me know if you have further questions

    You can mark it 'Accept Answer' if this helped.

    0 comments No comments