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‎08-13-2026 09:13 AM - edited ‎08-13-2026 09:20 AM

HP Recommended

Windows 11 Pro Version 10.0.26200 Build 26200
System Model: HP ProBook 4 G1i 16-inch Notebook AI PC
BIOS Version/Date: HP X72 Ver. 01.04.03, 01.05.2026
Secure Boot State: On
Windows Update: 2026-08 Security Update (KB5121003) (26200.9168).

Error: The Secure Boot update could not update SBAT with the error Unknown HResult Error code: 0x800700c1.

Kernel Boot: Error updating SBAT value in FW.

This error occurs repeatedly when Microsoft offers a security update for download.

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1 REPLY 1

‎08-13-2026 12:11 PM

HP Recommended

Hi @Lumate 

 

SBAT(Secure Boot Advanced Targeting)  It is used as a secure boot option for users who run both Windows and Linux on the same computer. If you only have Windows installed, it will not be updated; you must also have Linux installed. This does not affect the certificates emitted by Microsoft in any way.

 

SBAT It is not installed as a standalone program; it is automatically integrated into the bootmanager ( GRUB) of modern Linux distributions to manage Secure Boot revocation lists.

So when Linux is installed, Windows updates SBAT to incorporate its certificates and configure both operating systems to use Secure Boot (SBAT).

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