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2026-03 security update (kb5079473) (26200.8037) failed to install on 19 mar 2026 - 0x800f0983 - Surface Laptop 7 (Snapdragon)

Can 5 Reputation points
2026-03-21T07:09:01.5533333+00:00

Hey Microsoft Support,

The Update from the Title is failing to install everytime for the past 2 weeks. I'm on a Surface Laptop 7 with Snapdragon X Plus. I am very frustrated since im using a official Microsoft product and had it in my mind that updates wouldn't be frustrating point of using windows. I've already tried every possible solving path. My Laptop already had a devastating BSOD from a cumulative update, where I had to boot onto a windows 11 ARM Stick and use DISM for preventing actions. I had it fixed. But decided the time has come to have a fresh install of windows, so I did. But after that, a simple security update fails to install for the past 2 weeks.

I've already tried:

dism /online /cleanup-image /startcomponentcleanup

Surface | Surface Laptop | Install and update
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  1. Q&A Assist
    2026-03-21T07:09:17.1033333+00:00
    AI generated content. This question contains an answer created with AI from Q&A Assist. Learn more

    For KB5079473 repeatedly failing on a Surface Laptop 7 (Snapdragon X Plus), use an alternative installation path and, if needed, repair Windows using the supported in-place reinstall method.

    1. Try installing KB5079473 manually via MSU package
      1. Go to the Microsoft Update Catalog and download the Arm64 MSU package(s) for KB5079473.
      2. Place all downloaded MSU files in a single folder, for example C:\Packages.
      3. Open an elevated Command Prompt (Start → type cmd → right-click Command Prompt → Run as administrator).
      4. Run DISM to add the package directly: 
              DISM /Online /Add-Package /PackagePath:C:\Packages\Windows11.0-KB5079473-arm64.msu
        Alternatively, from elevated PowerShell: 
              Add-WindowsPackage -Online -PackagePath "C:\Packages\Windows11.0-KB5079473-arm64.msu"
      5. Restart the device when prompted and verify in Windows Update or winver that the build has advanced to the OS build listed for KB5079473.
      DISM will automatically discover and install any prerequisite MSU files in that folder that are required for KB5079473.
    2. If manual MSU installation still fails, repair Windows with an in-place reinstall If KB5079473 continues to fail (even after DISM /Online /Cleanup-Image /StartComponentCleanup), perform a repair reinstall of the current Windows version, which keeps files and apps but refreshes system components and Windows Update:
      1. Follow the guidance in “Fix issues by reinstalling the current version of Windows” to reinstall the same Windows version over the top of the existing installation.
      2. After the reinstall completes and the desktop loads, run Windows Update again and install KB5079473.
      This approach has been reported to resolve stubborn KB5079473 failures where SFC and DISM scans show no corruption but updates still fail.
    3. If the system becomes unstable again after attempting KB5079473 If a previous cumulative update caused BSODs and KB5079473 continues to corrupt components or apps after a repair reinstall, repeat the supported reinstall procedure and then temporarily pause updates while monitoring for a revised build or updated guidance from Microsoft.

    References:

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