uefi certificates

Microsoft released KB5092765 on May 26, 2026 as a Setup Dynamic Update for Windows 11 versions 24H2 and 25H2, improving setup reliability while again warning that older Secure Boot certificates used by most Windows devices begin expiring in June 2026. The update itself is not the drama; the...

Microsoft’s original 2011 Secure Boot certificates for Windows PCs begin expiring in June 2026, and Microsoft is rolling out 2023 replacement certificates through Windows Update so supported UEFI systems can keep validating trusted boot software without losing future early-boot security...

The first Microsoft Secure Boot certificate from the Windows 8 era expires on June 24, 2026, beginning a staged retirement of 2011 trust anchors that still underpin boot security on many Windows PCs, servers, and embedded systems. The immediate danger is not a wave of unbootable laptops. It is...

Microsoft’s May 18 Secure Boot AMA is aimed squarely at IT administrators preparing for the June 2026 expiration of older Windows Secure Boot certificates, and one enterprise question now captures the central deployment dilemma: whether successful OEM firmware updates can stand in for...

Microsoft is preparing Windows PCs for a Secure Boot certificate rollover beginning in late June 2026, when original 2011-era certificates start expiring and unsupported Windows 10 systems outside Extended Security Updates will not receive the replacement certificates. This is not a theatrical...

Windows users can check readiness for the June 2026 Secure Boot certificate expiration by running an elevated PowerShell command that looks for the Windows UEFI CA 2023 certificate, then using Windows Update, OEM firmware updates, or Microsoft’s documented registry-triggered update path if it is...

Microsoft’s 2011-era Secure Boot certificates begin expiring in June 2026, forcing Windows PCs, servers, and some virtual machines to move to Microsoft’s newer 2023 certificate chain through Windows Update, OEM firmware updates, or managed IT deployment before boot-level protections start to...

Microsoft has quietly given Windows administrators a badly needed diagnostic upgrade for the Secure Boot certificate transition: a new -Decoded parameter for the Get-SecureBootUEFI PowerShell cmdlet. Published under KB5093574 on April 28, 2026, the change turns Secure Boot’s normally opaque...

Microsoft’s new Secure Boot 2023 certificate assessment in Microsoft Defender arrives at a critical moment for Windows administrators: the original Secure Boot certificates issued in 2011 begin expiring in June 2026, with the transition stretching into the months that follow. The new Defender...

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...