Upgrade Exchange Server 2016 CU19 to CU22

Ibrahim hasan 61 Reputation points
2021-11-12T07:03:11.047+00:00

Dears,

I have three exchange servers, one in disaster recovery and the other two in production. And it's running on CU19, so I'll have to upgrade to the most recent version, which is CU22. I'd like to know the most practical steps for performing the update, and I'm planning to begin with upgrading DR first.

Thank you in advance for your assistance.

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. Leon Laude 85,881 Reputation points
    2021-11-12T08:03:04.113+00:00

    Hi @Ibrahim hasan ,

    Microsoft has documented the upgrade process and the best practices on how to upgrade Exchange to the latest Cumulative Update (CU) over here:

    Upgrade Exchange to the latest Cumulative Update
    https://learn.microsoft.com/en-us/exchange/plan-and-deploy/install-cumulative-updates?view=exchserver-2016

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    If the reply was helpful please don't forget to upvote and/or accept as answer, thank you!

    Best regards,
    Leon

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  2. Kael Yao-MSFT 37,696 Reputation points Microsoft Vendor
    2021-11-15T02:05:14.717+00:00

    Hi @Ibrahim hasan

    About the detailed steps to install Exchange Cumulative Update, I would also recommend the Exchange Deployment Assistant.
    149136-35.png
    It would guide you through the upgrade.

    And since you should have a DAG deployment, you may also need to first put the Exchange server which you would like to upgrade into maintenance mode.

    Here are several links which may be helpful:
    Installing updates on DAG members
    Performing maintenance on DAG members

    About the whole process: Installing Cumulative Updates on Exchange Server 2016
    (Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.)


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