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How can update Exchange 2013 from RTM to CU23 ? RRS feed

  • Question

  • Dear all,

    Now, my exchange 2013 is version RTM (first), I want update to version CU 23.

    Can I update directly from version RTM to version CU23 ? or have to update via the intermediate version. Currently, MS does not allow downloads of versions older than version 21. Please help me update the version.

    Thanks you so much.

    • Edited by Anhstu Friday, July 3, 2020 3:30 AM
    Friday, July 3, 2020 3:29 AM

All replies

  • Yes, go right to CU23.

    1. First Prepare the forest with the CU23 Download. Do each step explicitly.

    https://docs.microsoft.com/en-us/exchange/prepare-active-directory-and-domains-exchange-2013-help

    2. Update the server to CU23. Dont forget to update .net first, then the CU.

    https://docs.microsoft.com/en-us/exchange/plan-and-deploy/supportability-matrix?view=exchserver-2019

    If you are upgrading Exchange Server from an unsupported CU to the current CU and no intermediate CUs are available, you should first upgrade to the latest version of .NET that's supported by your version of Exchange Server and then immediately upgrade to the current CU. This method doesn't replace the need to keep your Exchange servers up to date and on the latest supported CU. Microsoft makes no claim that an upgrade failure will not occur using this method, which may result in the need to contact Microsoft Support Services.

    Friday, July 3, 2020 11:56 AM
  • Hi Anhstu,

    According to the Microsoft’s official document, you could upgrade Exchange server 2013 directly to CU23.

    Please follow the steps:

    1. Please ensure that all Exchange 2013 system requirements are met.

    For more information:Exchange 2013 system requirements.

    2. Because Exchange 2013 RTM is an older version than CU23, the prerequisites they need will also be different, so first we should prepare the prerequisites required by CU23. Especially .NET Framework 4.7.2 and Visual C++ Redistributable Package for Visual Studio 2012/2013.

    For more information: Exchange 2013 prerequisites and Microsoft .NET Framework.

    3. After you prepare the prerequisites, you could prepare the AD schema, AD and AD domains.

    For more information:Prepare Active Directory and domains.

    4. Then you could start to update the Exchange Server.

    For more information: Upgrade Exchange 2013 to the latest cumulative update or service pack.

    Regards,

    Lucas Liu


    Please remember to mark the replies as answers if they helped. If you have feedback for TechNet Subscriber Support, contact tnsf@microsoft.com.

    Monday, July 6, 2020 8:39 AM
  • Hi Anhstu,

    Do suggestions above help? If you have any questions or needed further help on this issue, please feel free to post back. If the issue has been resolved, please mark the helpful replies as answers, this will make answer searching in the forum easier.

    Thanks for your understanding.

    Regards,

    Lucas Liu


    Please remember to mark the replies as answers if they helped. If you have feedback for TechNet Subscriber Support, contact tnsf@microsoft.com.

    Thursday, July 9, 2020 10:25 AM