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My Current Version Exchange 2016(CU17) is it Safe to Upgrade CU19?

Sathishkumar Singh 486 Reputation points
2021-02-22T08:39:05.563+00:00

Hello Support

My Current Version of Exchange 2016 is running in (CU17) is it Safe to Upgrade CU19?

i have a Standalone Exchange Server.

no test lab in my end.

Any impact on CU19? Are can i wait for CU20? any customers review for CU19?

Please advise

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. Andy David - MVP 142.7K Reputation points MVP
    2021-02-22T12:50:40.493+00:00

    You should always be on the latest as it includes security updates. No need t wait,
    CU21 will actually be last the 2016 CU:
    https://techcommunity.microsoft.com/t5/exchange-team-blog/exchange-server-2016-and-the-end-of-mainstream-support/ba-p/1574110

    Every install is different, but CU19 has been out now for two months, which means Cu20 should be out soon. I would rather put Cu19 on now, then you can wait after that till CU21.

    CU17 was released 8 months ago, I would upgrade.
    Just be sure to follow the best practices:

    https://practical365.com/exchange-server/installing-cumulative-updates-on-exchange-server-2016/
    https://learn.microsoft.com/en-us/exchange/plan-and-deploy/install-cumulative-updates?view=exchserver-2019

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  1. Sathishkumar Singh 486 Reputation points
    2021-02-26T10:01:31.99+00:00

    Hello Andy and Zhengqilou

    My Current Infra is Running 20GB Exchange2016(CU17)(Single Server)

    ADs:-

    Primary AD :-

    Secondary AD:-

    Child Domain:-

    CDC01

    CDC02

    RODC:-

    RODC1

    RODC2

    Total Mailboxes

    User Mailbox:- 119

    SharedMailbox:- 153

    Two DBs:

    DB01 (Main DB)

    DB02(Archive)

    If i want to test Upcoming Exchange CUs. i have to restore All the above servers?
    or
    any one Primary AD and Exchange Controller is enough to do the test

    Please advise

  2. Xzsssss 8,861 Reputation points Microsoft Vendor
    2021-02-23T02:55:11.377+00:00

    Hi @SathishkumarSingh-0068 ,

    Yes you could upgrade to CU19 directly. It is recommended that users should always use the latest version, but since installing the CU would be a full setup, I would carefully consider Andy's suggestion.

    Regards,
    Lou

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