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DBX Update Failure Dual Boot
The current status of the dbx update failure for dual-boot users of Windows and Linux involves several reported issues and potential solutions. Users have encountered problems where the UEFI dbx update fails to apply, leading to persistent notifications and potential boot issues. For example, on a laptop with dual-booting Ubuntu and Windows 11, the fwupd tool was unable to update the UEFI dbx, resulting in an ongoing update notification.3
In some cases, the failure to apply the dbx update can be resolved by ensuring that the GRUB and shim are up to date. If there is a blocked executable in the ESP, users have found that removing the specific file, such as /boot/efi/EFI/Boot/bkpbootx64.efi, can allow the update to proceed.4
Additionally, some users have reported success by resetting the Secure Boot keys through the BIOS settings. This involves re-enabling Secure Boot and performing a factory reset of the keys, which can sometimes resolve the issue.6
It is also important to note that the dbx update is part of the Secure Boot configuration and is managed by the fwupdmgr utility rather than traditional package managers. Users are advised to run commands such as sudo fwupdmgr refresh --force and sudo fwupdmgr update to check for and apply updates.3
If the update still fails, checking the firmware settings and ensuring that the system is not in a state that prevents the update from being applied, such as having an incompatible BitLocker configuration, may be necessary.2
Overall, while the dbx update failure can be frustrating, there are several steps users can take to resolve the issue, including updating GRUB and shim, resetting Secure Boot keys, and using the fwupdmgr utility to manage the update process.
AI-generated answer. Please verify critical facts.
discussion.fedoraproject.org
Secure Boot dbx update? - Fedora Discussion
support.microsoft.com
Secure Boot DB and DBX variable update events - Microsoft Support
github.com
Unable to update UEFI dbx while dual booting Ubuntu and Windows 11 · Issue #8710 · fwupd/fwupd
askubuntu.com
grub2 - Secure Boot dbx Configuration Update 77 - 371 Ubuntu 23.10 - Ask Ubuntu
unix.stackexchange.com
linux - 'Secure Boot dbx Configuration Update' prompt on gui but terminal says everything is up to date. What is it? Is it safe to install? - Unix & Linux Stack Exchange
reddit.com
r/Ubuntu on Reddit: UEFI dbx
@zoran Let's keep to the facts, the problem is not a distro problem, but one created by Microsoft with poor construction of secure boot and certificates that are out of date. However, compounding the issue is Snapd, as Ubuntu users also face this issue, and as all should know by now Ubuntu made the wrong decision to replace apt with snap. One could argue that Zorin also made the wrong decision in adopting Snap in Zorin 17, as well as Flatpak. This is one of the reasons why I prefer Q4OS - Flatpak is available for those that want it, it is not present by default. And better still is PCLOS Debian.
I appreciate it is not possible for Notebook users to have separate hard drives, but for Desktop users I would no longer recommend dual-booting on the same drive as Windows. That said Notebook users could use an external drive for their OS of choice. If possible (and I am aware some users need Windows), months ago somone online suggested that the best way to run Windows is as a VM inside of GNU/Linux (But you would need at least 32 Gb of RAM as Windows 11 requires a minimum of 12 Gb of RAM to run and you can't exceed more than half of your physical RAM as you would crash the host OS.)