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Microsoft Issues WinRE & Setup Updates Ahead of 2026 Secure Boot Certificate

Steven Chua 15 Reputation points
2026-03-31T02:18:16.33+00:00

Microsoft Issues WinRE & Setup Updates Ahead of 2026 Secure Boot Certificate.

Microsoft has rolled out two new dynamic updates, KB5081494 and KB5083482, designed for Windows 11 versions 24H2 and 25H2.

How to get it install?

Windows for home | Windows 11 | Windows update
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  1. Sumit D - IA 165.2K Reputation points Independent Advisor
    2026-04-01T02:49:13.59+00:00

    It is not available via Windows update. how to install KB5081494, it is .cab file if download from Windows Catalog.

    It looks like these updates are intended for Business environments, so they aren't available through Windows Update directly. Instead, you'll need to use WSUS to push the update, which is then available in the Catalog.

    1 person found this answer helpful.

  2. Steven Chua 15 Reputation points
    2026-03-31T04:19:54.4233333+00:00

    PS C:\temp> add-windowspackage -online -packagepath "windows11.0-kb5081494-x64.cab"

    WARNING: Failed to add package windows11.0-kb5081494-x64.cab

    WARNING: Add-WindowsPackage failed. Error code = 0x80070002

    add-windowspackage : The system cannot find the file specified.

    At line:1 char:1

    • add-windowspackage -online -packagepath "windows11.0-kb5081494-x64.ca ...
    • 
          + CategoryInfo          : NotSpecified: (:) [Add-WindowsPackage], COMException
      
          + FullyQualifiedErrorId : Microsoft.Dism.Commands.AddWindowsPackageCommand  
        
      

    not able to install the .CAB file

    1 person found this answer helpful.

  3. Steven Chua 15 Reputation points
    2026-03-31T03:30:15.9166667+00:00

    It is not available via Windows update. how to install KB5081494, it is .cab file if download from Windows Catalog.

    1 person found this answer helpful.

  4. Sumit D - IA 165.2K Reputation points Independent Advisor
    2026-03-31T03:27:21.5966667+00:00

    Hi Steven,

    A few updates were pulled by Microsoft to temporarily investigate some issues. KB5081494 is available although it should install without any action from your end. You can download from Catalog:

    https://www.catalog.update.microsoft.com/Search.aspx?q=KB5081494

    I hope this information helps. If you have any more questions, don't hesitate to reach out.

    Otherwise, please take a moment to rate the answer. Wishing you good luck!

    1 person found this answer helpful.
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  5. Adel Shaker Gergios 0 Reputation points
    2026-04-01T04:47:36.3+00:00
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