• Understanding Windows bundled updates

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    Motivation: Windows 10 update March 22, 2018—KB4088891 (OS Build 15063.994) states:

    Important When installing both the SSU (KB4088825) and the LCU updates from the Microsoft Update Catalog, install the SSU before installing the LCU.”

    SSU=Servicing Stack Update. LCU=Latest Cumulative Update.

    The reason that SSU update KB4088825 should be installed first perhaps is because it fixes a severe issue with older SSUs.

    Why isn’t this an issue if you install KB4088891 via Windows Update? I believe the answer is because KB4088891 perhaps bundles update KB4088825. Even if that’s not the case, abbodi86 stated that for Windows 10 v1709, SSUs are bundled with CUs.

    So what exactly is a bundled update? BundledUpdates is one of the data items asssociated with a given Windows Update. From Relationships Among Updates: “Bundle – A container for updates. Updates that declare a bundle relationship cannot have applicability rules or payloads. If update A bundles updates B and C, then installing A will install B and C if both are applicable on the client machine. In general, a bundle is offered for installation if the client detects at least one bundled child as Needed. During installation, all applicable child updates are installed in the order specified by the bundle. If an installation failure occurs for any of the children, the install of the bundle stops at that point (with no roll-back).”

    Per WSUS : Bundle update hierarchy in IUpdate, one of the uses of update bundles is to ensure that a given update is installed before another given update. Windows Update perhaps solves the update order issue in the motivating example by using a bundled update. However, the Catalog downloads for KB4088891 don’t even list the (perhaps) bundled update KB4088825.

    Conclusion: Regarding bundled updates, it’s better to install a given update via Windows Update than from the Catalog.

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    Viewing 5 reply threads
    • #177793

      Another recent update bundling example: .NET Framework 4.7.1 is bundled with .NET Framework 4.7.1 Update (KB4054856) per this post. The term “co-installed” is used instead of “bundled” at .NET Framework 4.7.1 is available on Windows Update, WSUS and MU Catalog.

    • #177799

      Per this post, Windows Update MiniTool can list the bundled updates (if any) of a given update.

    • #177860

      Using Windows Update MiniTool, it appears that KB4088891 doesn’t bundle KB4088825.

      This is Windows Update MiniTool’s clipboard-copied text for .NET Framework 4.7.1 (KB4033342) x64:


      .psf (patch storage file) files are involved with Express updates.

    • #177869

      Do you get tired of waiting for Windows Update to download something if it is not a delta update package?

      • #177892

        Is there an easy way to know if the delta or full update is being used?

        • #177900

          Without trying to further observe any behavior, I do not know. You might can guess the type by the time used while windows update finishes a download.

          I was just thinking about the time spent waiting for Microsoft or getting the packaged thing yourself from the catalog.

    • #177924

      Good news for users of Windows Update MiniTool: When I installed .NET Framework 4.7.1 (KB4033342) x64 on Windows 7 x64 using Windows Update MiniTool, its bundled updates were also installed :).

      1 user thanked author for this post.
    • #189936
      Given MS’s recent history (six months of botched/ problematic roll-up patches for Win7 and Win10), and given that the roll-ups have lots of patches in them (to break) rather than one patch at a time: What are the dangers of simply denying 100% of all roll-ups as a policy in favor of sending out individual patches (via the VSA we use, Kaseya, and sending in the correct order where applicable) to the field? Are there ever patches in the roll-ups that are not broken out individually?
      EDIT: Removal of HTML, please use text tab for copy & pasting HTML.
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