Azure and On Prem Server

Shannon Winings 1 Reputation point

Hi Everyone,

I would like to update our GAL in Azure and have it update the On Prem server we have it linked to. I am being told by our IT contractors that it is not an option - that they need to update the On Prem server in order for the GAL to update.

I am trying to make it more efficient for us to update contacts/emails instead of emailing them to have it updated.

Unfortunately, my trust in some of the information is not very high.

My question is - is this true? Are we only able to update the GAL by updating the On Prem server?
Is my only option to make it easier to update contact lists to create a public folder for our employees to use?


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.
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  1. Joyce Shen - MSFT 16,651 Reputation points

    Hi @Shannon Winings

    Is there any update about this issue so far?

    The workaround you mentioned above: Is my only option to make it easier to update contact lists to create a public folder for our employees to use?

    Yes, it's OK to do, if you have migrated all your users to cloud, you could ceate a public folder in cloud and create the contact list to meet your need.

    According your description above, you have deployed AD sync between your on-prem and online environment. When an on-premises object is synced to a Microsoft Office 365 organization through Active Directory synchronization, then the object can only be managed from on-prem Exchange, we cannot manage them directly in cloud, since they are owned by on-prem.

    And you could also consider changing your environment to a cloud-only environment if you have all your mailboxes in Exchange Online. And you don't need to manage your users from on-premises and no longer have a need for directory synchronization or password synchronization. This will be an easier choice for your management.

    Details: How and when to decommission your on-premises Exchange servers in a hybrid deployment

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