Hardware Lenovo’s BIOS updates are failing on Windows 11 after Microsoft made a change

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https://www.windowslatest.com/2025/03/27/lenovos-bios-updates-are-failing-on-windows-11-after-microsoft-made-a-change/

Lenovo BIOS updates are broken on Windows 11 (and Windows 10) after Microsoft made a security change that blocks WinFlash64.exe from executing. Microsoft updated the Vulnerable Driver Blocklist (DriverSiPolicy.p7b) to improve security, but it blocks WinFlash64.exe, which is required by the BIOS utility developed by Lenovo. As a result, BIOS updates fail.

Lenovo frequently releases BIOS updates using its software or Windows Update, but some of our readers told me that recent BIOS updates are failing. Either the installation fails before Windows boots, or you might land on a “Flash Error” page, which requires you to reboot to go back to the desktop.

In a support document first spotted by Windows Latest, Lenovo confirmed that it’s aware of reports that its BIOS updates could fail on Windows 11/10 and is working on a solution.

Lenovo's BIOS updates are failing on Windows 11 after Microsoft made a change

Lenovo BIOS updates are broken on Windows 11 (and Windows 10) after Microsoft made a security change that blocks WinFlash64.exe.

www.windowslatest.com

https://pcsupport.lenovo.com/au/en/products/laptops-and-netbooks/thinkpad-t-series-laptops/thinkpad-t14s-gen-3-type-21br-21bs/solutions/ht517407