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Dynamics 365 Community / Forums / Microsoft Dynamics AX (Archived) / Kernel version and App...
Microsoft Dynamics AX (Archived)

Kernel version and Application version

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Posted on by @rp@n 30

Dear All,

Some time we saw that in MS Dynamics AX 2012 R3 (Kernel version and Application version) is different and some time both are same.
Question
What is the exact cause of different versions of Kernel and Application?

It should be always same in Application?

Thanks!

Regards,

Arpan Sen

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I have the same question (0)
  • @rp@n Profile Picture
    @rp@n 30 on at

    Dear All,

    Could you please anyone give me more shed on this.

    Thanks!

    Arpan Sen

  • Suggested answer
    Mea_ Profile Picture
    Mea_ 60,284 on at

    Hi @rp@n,

    Kernel is a version of AX binaries and application is version of X++ code. MS recommends to install latest kernel (could be found here blogs.msdn.microsoft.com/.../overview-of-microsoft-dynamics-ax-build-numbers) because it does not require any x++ code change or merge and could have latest fixes and increase AOS stability and performance.

  • @rp@n Profile Picture
    @rp@n 30 on at

    Thanks Ievgen,

    Could you please let me know what exactly mean AX Binaries?

    Both (Kernel and Application) version should be same required in MS Dynamics AX?

    Thanks!

    Arpan Sen

  • Verified answer
    Mea_ Profile Picture
    Mea_ 60,284 on at

    Hi @rp@n,

    Let me quote support blog blogs.msdn.microsoft.com/.../faq-microsoft-dynamics-ax-kernel-hotfixes

    Q1: What is a kernel hotfix?

    A kernel hotfix updates the binary source files and other supporting files for all the AX components.

    Kernel hotfixes are therefore also commonly referred to as binary hotfixes. Some examples of the files a kernel fix may update are the executable files (ax32.exe, ax32serv.exe) and assemblies (Microsoft.Dynamics.AX.*.dll). The installer will replace each file that needs patching with a newer version.

    Q8: Is it supported to have a different kernel and application build?

    YES, it is supported to have different builds for the application and the kernel BUT… they must be for the same version and service pack level.

    Our Product Group ensure that dependencies between the application and kernel are not introduced when creating AX hotfixes. Dependencies between the application and kernel builds can only be introduced in a new product version and a new service pack (NOT in a rollup/cumulative update).

    We also recommend having a kernel build that is the same or higher build than the application build. Applying a kernel update is normally a simpler process than updating the application code, so in the case of applying a cumulative update it makes sense to apply the kernel part of the update as well as the application part. This also ensures that you get the full benefit from any hybrid fixes, which as mentioned above require updates in both the kernel and application to function fully.

  • @rp@n Profile Picture
    @rp@n 30 on at

    Thanks Ievgen

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