uefi certificates

Microsoft’s March 10, 2026 Safe OS Dynamic Update for Windows 11, version 23H2 — published as KB5078882 in the support note you provided — is a narrowly scoped but operationally critical package that ties into a wider, calendar‑driven platform maintenance effort: Microsoft’s coordinated refresh...

Microsoft has quietly accelerated a platform-level Secure Boot certificate refresh for Windows 11 — one that replaces long‑lived Microsoft UEFI certificates issued around 2011 with a new 2023 certificate family so devices remain able to trust and receive pre‑boot security updates after those...

A quiet but consequential deadline is coming for Windows machines: the long‑lived Secure Boot certificates that Microsoft provisioned beginning in 2011 are set to begin expiring in June 2026, and while Microsoft and many OEMs are pushing replacement certificates to devices automatically, a...

Microsoft has quietly started delivering a critical Secure Boot certificate refresh to more Windows 11 PCs, a timed, multi-stage update designed to replace aging UEFI signing certificates issued around 2011 with a new 2023 certificate family so devices keep trusting boot components and continue...

Microsoft quietly refreshed and republished detailed Secure Boot FAQ content this winter, restoring step‑by‑step guidance and timeline clarity as the industry races toward the mid‑2026 expiration of several long‑running UEFI signing certificates. The updated FAQ and related Microsoft posts make...

Microsoft has issued a platform-level warning: the Secure Boot certificates first issued around 2011 that underpin Windows’ pre-boot trust model begin expiring in June 2026, and although most updated systems will continue to boot, devices that do not receive the replacement certificate family...

If your PC is more than a couple of years old and you rely on UEFI Secure Boot, there’s an urgent maintenance item you cannot ignore: the Microsoft Secure Boot certificates issued around 2011 begin expiring in mid‑2026. Microsoft and major OEMs have prepared a replacement family (“2023 CA”), and...

Microsoft has quietly begun a platform-level refresh of the cryptographic anchors that protect Windows’ pre‑boot environment, delivering new Secure Boot certificates through Windows Update and coordinated OEM firmware work to head off a calendar‑driven failure when Microsoft’s original UEFI...

Microsoft is quietly rolling out replacement Secure Boot certificates to Windows devices because several Microsoft-issued UEFI certificates from 2011 begin expiring in mid‑2026, and systems that still rely on those old certificates risk losing the ability to receive security updates for pre‑boot...

Microsoft is quietly replacing the Secure Boot certificates used by Windows with a new 2023 certificate family to prevent a calendar-driven failure when long-lived Microsoft UEFI certificates issued in 2011 begin to expire in mid‑2026 — a background security change that matters to PC gamers...

Microsoft is quietly rolling a coordinated replacement of long‑lived Secure Boot certificates into Windows and firmware now — because several Microsoft UEFI certificates issued in 2011 begin expiring in mid‑2026 — and PC gamers should treat this as a high‑priority maintenance event that touches...

Microsoft has started an automated, phased replacement of expiring Secure Boot certificates on eligible Windows 11 systems, a preventative move to avoid widespread boot‑level serviceability and security loss when long‑running Microsoft certificates issued circa 2011 begin to expire in mid‑2026...

Microsoft has published explicit registry controls that let IT teams trigger, monitor, and manage the rollout of the new Secure Boot certificates and boot manager signed by the 2023 Microsoft UEFI certificate family — a critical operational path for enterprises that must replace expiring...

Microsoft's Secure Boot, a critical security feature introduced with Windows 8, is undergoing significant updates to its certificate infrastructure to maintain system integrity and trustworthiness. This initiative addresses the impending expiration of existing certificates and enhances defenses...