Should I Upgrade Exchange Server 2019 from CU11 to CU12?

Michael Adams 306 Reputation points

I have an Exchange Server 2019 with CU11 which is running perfectly. I see Microsoft is still providing updates for CU11. I am getting ready to put in Hybrid Modern Authentication, so I am a bit torn as whether I should upgrade to CU12 first. This is a production server, so I can't afford extended downtime.


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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. Andy David - MVP 143.8K Reputation points MVP

    Hi, you really should upgrade. The security updates for CU11 will stop once CU13 is out then you will have little choice and if a security update is required ASAP, it will then mean upgrading to the next CU then applying the latest SU.

    Better to be in a position where you only need to apply a SU if needed.

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  1. Michael Adams 306 Reputation points

    Good point. I'll go ahead and upgrade to CU12 then.

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