PCWorld reports that Windows PCs need updated 2023 Secure Boot certificates as older 2011 certificates expire in 2026, leaving systems vulnerable to malware. Hardware vendors, not Microsoft, control these critical security updates through UEFI/BIOS firmware, meaning unsupported older PCs may require hardware upgrades. Users can check their protection status in Windows Security app for a green Secure Boot checkmark and update firmware accordingly. You've probably seen countless warnings lately about Windows and expiring Secure Boot certificates . Why? Some PCs haven't gotten the updates yet--and won't unless you take action.

PCWorld reports Microsoft released the Secure Boot 2023 certificate update for Windows 10 and 11 just before original 2011 certificates expired in 2026. This critical security update prevents potential PC boot issues and maintains protection against rootkits and bootkits at startup. Users can verify their certificate status through Windows Settings, with green indicating success and red requiring BIOS updates from manufacturers. Microsoft just pushed the Secure Boot 2023 certificate update to all eligible Windows 11 and Windows 10 computers, just in time given that old certificates were due to expire today . It's a good thing, too, since your PC could face real problems without updated certificates .

PCWorld reports that Windows Secure Boot certificates expire on June 24th, affecting both Windows 10 and 11 systems receiving security updates. Users must install latest Windows updates to receive new certificates, as failure to update could cause serious boot failures. While the deadline isn't a hard cutoff, enabling Secure Boot now ensures automatic updates and enhanced protection against malware. On June 24th--that's tomorrow, as of this writing--Windows users will run into an important deadline: new Secure Boot certificates must be installed on all systems that use Secure Boot, the security feature that protects against various threats at startup. The first warning about updated certificates was issued back in January .

PCWorld reports that Windows 11 PCs face a critical Secure Boot certificate expiration in June 2026 that could compromise system security. Current certificates from 2011 will stop receiving boot-critical updates and malware blacklists, potentially causing boot failures or blocking future Windows feature updates. Microsoft is rolling out new certificates to prevent these issues, making timely updates essential for maintaining PC security and functionality. Microsoft has clarified what will happen to Windows 11 PCs if Secure Boot certificates are not updated before they expire in June 2026. Secure Boot is a security standard developed by the PC industry.