Exchange Server 2016 Cumulative Update

Juan Dela Cruz 1 Reputation point
2023-01-09T01:33:37.583+00:00

Hi All,
I am planning to migrate our current Exchange server 2016 CU19 (Hybrid Setup with MS365) to Exchange server 2019. Do I still need to install CU11 on the current exchange server 2016? Thank you.

Exchange Server
Exchange Server
A family of Microsoft client/server messaging and collaboration software.
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Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
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  1. Amit Singh 4,846 Reputation points
    2023-01-09T09:33:29.847+00:00

    Follow the Migration Assistant to move between versions once everything has been migrated to 2019.
    To reduce the current client's effect, install a new Exchange 2019 server on a new network side, then configure all services (including SCP, all VD's URL, Outlook Anywhere, and MAPI over HTTP) and install the certificate.

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  2. Aholic Liang-MSFT 13,741 Reputation points Microsoft Vendor
    2023-01-10T02:08:54.613+00:00

    Hi @Juan Dela Cruz ,
    The requirement to upgrade Exchange Hybrid Server 2016 to 2019 is to upgrade Exchange Server 2016 to the latest cumulative updates.
    Then setup an Exchange 2019 Server on a new VM or physical server for migration.

    Here is a guide on how to upgrade Exchange : How to Upgrade Exchange Hybrid Server 2016 to 2019? (linkedin.com)
    Hope this helps!
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