Microsoft has acknowledged that several older Secure Boot certificates have expired, necessitating updates for Windows 10 and 11 users. A temporary halt in the issuance of new Secure Boot certificates affects specific PCs, particularly various HP models. Most PCs will receive updates automatically through Windows Update, but some may require a firmware update from the manufacturer. Users may see messages indicating that Secure Boot certificate updates are paused or blocked due to known issues or hardware/firmware limitations. Until manufacturers like HP release necessary firmware updates, users cannot update their Secure Boot certificates. Although the immediate risk from expired certificates is low, it is expected to increase over time. Devices with un-updated Secure Boot certificates will continue to function normally, but they will not receive new security updates, making them vulnerable to emerging threats. Essential features that rely on updated security measures may cease to function correctly as new security challenges arise.