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 142.3K 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. 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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  2. 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