Hello, i have one local Active Directory Domain and two tenants. There is already one Entra ID Sync Connection established to Tenant 1. I want to sync my local AD Objects to both Tenants like in this topolgy picture i have attached. What do I need to be aware of when installing and configuring the second Entra ID Connect Sync? I dont want to mess things up with the current Connection when implementing the second connection to Tenant 2. How do I do it with the Source Anchor?

Hi @ Dikkule , please take a look here: Sync AD objects to multiple Microsoft Entra tenants You will find a list with more details about this sync topology. Regarding the Source Anchor: This topic is part of the list of details as well. The same Source Anchor can be used for a single object in separate tenants (but not for multiple objects in the same tenant). (The verified domain can't be the same in two tenants. More details are needed to enable the same object to have two UPNs.) (If the reply was helpful please don't forget to upvote and/or accept as answer , thank you) Regards Andreas Baumgarten

Entra ID Connect Sync to two tenants

Accepted answer

Andreas Baumgarten 113.4K Reputation points MVP

2024-12-16T16:42:09.2866667+00:00
Hi @Dikkule ,

please take a look here: Sync AD objects to multiple Microsoft Entra tenants

You will find a list with more details about this sync topology.

Regarding the Source Anchor: This topic is part of the list of details as well.

The same Source Anchor can be used for a single object in separate tenants (but not for multiple objects in the same tenant). (The verified domain can't be the same in two tenants. More details are needed to enable the same object to have two UPNs.)

(If the reply was helpful please don't forget to upvote and/or accept as answer, thank you)

Regards

Andreas Baumgarten
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Dikkule 21 Reputation points

2024-12-18T08:45:41.2666667+00:00

Hello I already studied that document. But is there somewhere a documentation how i proceed in the installation to achieve this kind of topology? I dont want to make any mistakes which can have an impact on the existing Entra ID Connection to Tenant A.

Harshitha Eligeti 1,210 Reputation points Microsoft Vendor

2024-12-18T22:54:56.5+00:00

Hi @Dikkule

To synchronize your local Active Directory (AD) objects to two Microsoft Entra tenants while preserving the existing connection to Tenant A, you must carefully configure a second Azure AD Connect synchronization instance.

After installing and configuring the second Azure AD Connect instance for Tenant B, it is essential to manually trigger a synchronization to ensure that objects are synchronized to both tenants without any conflicts. Please note that there are certain limitations outlined in the documentation for syncing AD objects to multiple Entra tenants.

For detailed guidance on achieving this topology, refer to the following resource: Azure AD Connect - One Forest, Two Tenants, Same OUs.

Hope this helps. Do let us know if you have any further queries.

Regards,
Harshitha Eligeti.
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Entra ID Connect Sync to two tenants

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