Microsoft has recently begun replacing expiring Secure Boot certificates on eligible Windows 11 systems running 24H2 and 25H2 ...

Secure Boot has relied on the same security certificates to verify bootloaders since 2011, during the development cycle for ...

Microsoft will roll out new Secure Boot certificates for Windows users starting June, as the old certificates will expire.

Microsoft has begun rolling out updated Secure Boot certificates through monthly Windows updates to replace the original 2011 certificates that will expire in late June 2026.

Microsoft is automatically replacing boot-level security certificates on Windows devices before they start expiring later this year. The new Secure Boot certificates will be rolled out as part of the ...

Microsoft has launched a critical "generational refresh" of Secure Boot certificates to replace aging security keys that are ...

Secure Boot operates before Windows loads, blocking untrusted code from executing during startup. The trust mechanism relies on certificates stored in device firmware; Microsoft s ...

Microsoft is updating the digital certificates powering Windows’ Secure Boot software verification feature, an ambitious effort to maintain the security of more than 1 billion devices worldwide.

Secure Boot certificate upgrades is bad news for Windows 10 ...

Windows 11 KB5074109 (January 2026 Update) is causing major issues on some PCs, and Microsoft has more details to share.