Removing Exchange on-prem

James 20 Reputation points
2025-02-16T15:17:28.7833333+00:00

Hi,

We have inherited several sites where hybrid Exchange migrations were executed. Mailboxes have moved to M365 etc, but there is still an on-prem Exchange 2016 Server and  ADSync is still in use. We want to get rid of these Exchange Servers as this post hybrid migration setup is a mess (and problematic) to manage. Would much rather be fully M365.

But even according to Microsoft, this is not really possible? https://learn.microsoft.com/en-us/exchange/decommission-on-premises-exchange

Anyone got guidance on how to safely decommission on prem exchange (and ADSync ultimately)?

Thanks

Microsoft Exchange Hybrid Management
Microsoft Exchange Hybrid Management
Microsoft Exchange: Microsoft messaging and collaboration software.Hybrid Management: Organizing, handling, directing or controlling hybrid deployments.
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  1. Bruce Jing-MSFT 8,725 Reputation points Microsoft Vendor
    2025-02-17T09:36:02.01+00:00

    Hi,@James

    Thanks for posting your question in the Microsoft Q&A forum.

    Based on your description, I think your environment fits Scenario one.

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    You can refer to this link for details:https://learn.microsoft.com/en-us/exchange/decommission-on-premises-exchange


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