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Cumulative update KB5079473 fails to install

George Mills 15 Reputation points
2026-03-22T08:24:53.9833333+00:00

2026-03 Security Update (KB5079473) (26200.8037). Failed to install - 0x80073712

I've tried it multiple times after restarting and run diagnostics, but it still doesn't work.

System details:

  • Windows 11 Home, Version 25H2, OS build 26200.7171
  • 64-bit operating system, x64-based processor

Any help much appreciated.

Windows for home | Windows 11 | Windows update
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3 answers

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  1. Sin-D 10,130 Reputation points Microsoft External Staff Moderator
    2026-03-25T01:53:24.69+00:00

    Hi George Mills,

    Thanks for the detailed update and for sharing the DISM output. In addition to Q&A Assist, please try the following:

    Step 1 – Repair the component store using an in‑place repair

    When DISM reports component store corruption that it cannot resolve online, Microsoft’s supported recovery path is an in‑place repair install using official Windows 11 media. This refreshes system components while keeping your files and apps:

    1. Download the official Windows 11 installation media from Microsoft: https://www.microsoft.com/software-download/windows11
    2. Run setup.exe from within Windows
    3. Choose “Keep personal files and apps”
    4. Complete the repair, then run Windows Update again

    Note: This is not a reset and should not remove data, but having a backup is always recommended.

    Microsoft reference:

    Step 2 – After repair, retry Windows Update

    Once the repair completes:

    • Open “Settings” > “Windows Update”
    • Select “Check for updates”
    • Let Windows Update install KB5079473 normally

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  2. George Mills 15 Reputation points
    2026-03-22T08:53:07.3366667+00:00

    Just tried the AI suggested steps and received the below error. Unfortunately I cannot upload the DISM log as its too large!

    C:\Windows\System32>DISM /Online /Add-Package /PackagePath:C:\Packages\Windows11.0-KB5079473-x64.msu

    Deployment Image Servicing and Management tool

    Version: 10.0.26100.5074

    Image Version: 10.0.26200.7171

    Processing 1 of 1 -

    [==========================100.0%==========================]

    [===========================73.0%========== ] An error occurred - C:\Packages\Windows11.0-KB5079473-x64.msu Error: 0x80073712

    Error: 14098

    The component store has been corrupted.

    The DISM log file can be found at C:\WINDOWS\Logs\DISM\dism.log

    C:\Windows\System32>

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  3. AI answer

    2026-03-22T08:25:08.13+00:00

    Error 0x80073712 indicates that Windows Update cannot install the package because some update components or metadata are corrupted or missing.

    For KB5079473 on Windows 11 25H2 x64, use these steps to work around the failure:

    1. Download KB5079473 manually
      Go to the Microsoft Update Catalog entry for KB5079473 and download the x64 package for Windows 11 25H2. This cumulative update already includes the required servicing stack update (KB5083532) and other prerequisites.
    2. Install using DISM (recommended for repeated failures)
      Create a folder such as C:\Packages and place the downloaded MSU file(s) there. Then run an elevated Command Prompt and use DISM to install the package directly: 
         DISM /Online /Add-Package /PackagePath:C:\Packages\Windows11.0-KB5079473-x64.msu
      Alternatively, from an elevated Windows PowerShell prompt: 
         Add-WindowsPackage -Online -PackagePath "C:\Packages\Windows11.0-KB5079473-x64.msu"
      DISM will automatically handle any prerequisite MSU files in the same folder if present.
    3. If DISM still fails, use offline/installation media repair
      If the component store is too damaged for the online update path, perform an in-place repair/reinstallation of the current Windows 11 version using official installation media. This keeps personal files and apps while refreshing system components, which has resolved similar KB5079473 failures and metadata issues for other users. After the repair, run Windows Update again so KB5079473 can install normally.
    4. As a last resort, full reinstall
      If even in-place repair fails or the system becomes unstable, back up data and perform a full reinstall of Windows 11, then apply updates again. This has been reported to fix persistent KB5079473 installation problems when other methods did not.

    Note: KB5079473 is a combined servicing stack update (KB5083532) and latest cumulative update. Once successfully installed, it will update the servicing stack and OS build to 26200.8037. Removing it later requires DISM /Remove-Package; wusa.exe /uninstall will not work on the combined package.

    References:

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