Uefi shell edit file. Oct 14, 2025 · How these keys work together IT admins configure the AvailableUpdates registry value to 0x5944, which signals Windows to execute the Secure Boot key update and installation on the device. To fix this, you need to reapply the 2023 certificate to the firmware’s DB using the recovery application. If you forgot your UEFI password, here's what you can do. Oct 14, 2025 · Learn about Unified Extensible Firmware Interface (UEFI) features and how to access them on Surface Pro models and Surface 3. You can access these settings by choosing: Settings > Update & Security > Recovery > Restart now. Windows will detect that a restart is needed before the boot manager can be applied. Check with your IT administrator for the password If your device is managed by someone else, such as your IT department or a different owner, check with them for the password. Aug 26, 2021 · While the requirement to upgrade a Windows 10 device to Windows 11 is only that the PC be Secure Boot capable by having UEFI/BIOS enabled, you may also consider enabling or turning Secure Boot on for better security. As the process runs, the system updates UEFICA2023Status from NotStarted to InProgress, and finally to Updated upon success. The table below shows which devices have the updated certificates already present in UEFI (and which version, if applicable) and an updated recovery image available from Microsoft. . The DB variable is used to add trust for Secure Boot components and is typically used to trust certificates used to sign boot managers. If any step fails Aug 26, 2021 · While the requirement to upgrade a Windows 10 device to Windows 11 is only that the PC be Secure Boot capable by having UEFI/BIOS enabled, you may also consider enabling or turning Secure Boot on for better security. Learn about Unified Extensible Firmware Interface (UEFI) features and how to access them on Surface Pro 4, Surface Book, and Surface Studio. Introduction Windows updates released on and after February 13, 2024 include the ability to apply the Windows UEFI CA 2023 certificate to UEFI Secure Boot Allowed Signature Database (DB). Jun 26, 2025 · Finally, the scheduled task updates the Windows boot manager to the one signed by the Windows UEFI CA 2023. As each bit in 0x5944 is processed successfully, it is cleared. If any step fails Sep 15, 2025 · If Windows is already using the 2023-signed boot manager but the firmware is reset to defaults that don’t include the Windows UEFI CA 2023 certificate, Secure Boot will block the boot process. Updating the DB will enable devices to receive future boot loader updates that are included in monthly updates. Sep 15, 2025 · If Windows is already using the 2023-signed boot manager but the firmware is reset to defaults that don’t include the Windows UEFI CA 2023 certificate, Secure Boot will block the boot process. Jun 15, 2022 · This event is logged when the Microsoft UEFI CA 2023 certificate is added to the DB variable. Oct 14, 2025 · If you need to enable TPM, these settings are managed via the UEFI BIOS (PC firmware) and vary based on your device. Jun 26, 2025 · What is Secure Boot? Secure Boot is a security feature in Unified Extensible Firmware Interface (UEFI) based firmware that helps ensure that only trusted software runs during a device's boot (start) sequence. kxp akv owi vlc vlr bkh fsk tai srt izp xtk muq cxp qqc itz