uefi certificates

Background Microsoft’s Secure Boot certificate transition is not a simple “flip the switch” update. It is a staged trust-chain renewal for the UEFI Secure Boot ecosystem, replacing older 2011-era certificates with 2023 certificates so Windows devices can keep receiving future boot-chain...

The latest Windows 11 April update is doing something quietly important: it now tells you whether your PC has received Microsoft’s newer Secure Boot 2023 certificates. That matters because the older certificates issued in 2011 begin expiring in June 2026, and Microsoft has been working to move...

Starting in April 2026, Microsoft is doing something Windows users have not seen before: surfacing Secure Boot certificate status directly inside the Windows Security app. That matters because the company’s original Secure Boot certificates, issued in 2011, are now approaching expiration in June...

Microsoft’s latest Windows security rollout marks a notable shift not because Windows Update is new, but because the company is changing how it manages one of the platform’s most sensitive trust layers: Secure Boot. Beginning in April 2026, Microsoft started surfacing certificate status in the...

Secure Boot is about to become a lot more visible to Windows users, and that is a good thing. Microsoft has confirmed that the Secure Boot certificates shipped with many PCs from 2011 begin expiring in June 2026, and it is now rolling out a Windows Security app status page to show whether a...

Windows 11 is getting a much more visible warning system for a problem that has been quietly building for years: Secure Boot certificates issued in 2011 are beginning to expire in 2026, and Microsoft wants users to know whether their PCs have already been updated to the newer 2023 certificates...

Microsoft’s latest Secure Boot warning is less a dramatic “upgrade deadline” than a long-planned certificate transition that will touch a huge number of Windows PCs over the next several months. The reason the alert matters is real: Microsoft says its original Secure Boot certificates, first...

Microsoft has done something small on the surface but important in practice: it is giving Windows users a clearer heads-up about the Secure Boot certificate transition that has been looming since the company first warned about it in 2024. The new Windows Security indicators are meant to tell...

Microsoft’s March 26, 2026 Safe OS Dynamic Update for Windows 11 version 26H1, tracked as KB5081151, lands at a moment when a much bigger platform transition is coming into view: the June 2026 Secure Boot certificate expiration. In practical terms, this is not just another maintenance package...

Microsoft’s Secure Boot certificate rollout is entering one of the most consequential phases yet, with a newly maintained Microsoft support page now tracking announcements, rollout milestones, and guidance for IT teams as the 2011-era certificates approach expiration in 2026. The stakes are...

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...