secure boot

Microsoft has issued a clear operational warning: the Secure Boot certificates that have anchored Windows’ pre‑boot trust since about 2011 are reaching the end of their planned lifetimes, and IT teams must act now to ensure fleets — especially servers, air‑gapped systems, and Windows 10 devices...

Microsoft has quietly pushed KB5077241 into the Windows 11 preview channel and, while it’s not a headline-grabbing feature update, it is one of the more consequential quality-and-security releases in months — bundling a practical taskbar speed test, a curated Emoji 16 roll‑in, in‑box Sysmon...

Microsoft is executing a coordinated, ecosystem-wide refresh of the Secure Boot certificate anchors that have protected Windows pre‑boot integrity since 2011 — a change with exact operational deadlines and real consequences for consumers, enterprises, servers, and specialized devices if it is...

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’s February Safe OS bulletin — framed in the short public entry you supplied as KB5079270 and dated February 24, 2026 — is not just another quiet WinRE refresh: it is a targeted reminder and operational trigger for a platform-wide task that every Windows administrator and many power...

Microsoft released a targeted Setup Dynamic Update for Windows 11 (KB5079271) on February 24, 2026, and — alongside that quietly published package — reiterated an urgent, calendar-driven warning: the Microsoft Secure Boot certificates issued in 2011 begin expiring in June 2026, and organizations...

Microsoft’s February 24, 2026 Safe OS Dynamic Update notice for Windows 11, version 26H1 surfaces a hard deadline that administrators and power users cannot ignore: the Microsoft Secure Boot certificates issued in 2011 begin expiring in June 2026, and devices that do not receive the replacement...

Microsoft has published an operational playbook that tells Windows Server administrators exactly what to do — and when — to replace the Secure Boot certificates that are due to expire starting in June 2026, and the consequences for fleets that don’t act are significant enough that this is now a...

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 and OEM partners are sounding the alarm: the Secure Boot certificate chain that has protected the Windows boot path since 2011 begins to expire in late June 2026, and Windows Server administrators must act now to avoid degraded boot security and future inability to receive critical...

Microsoft has issued a clear, time‑bound call to action for server administrators: the Secure Boot certificate authorities (CAs) that have underpinned Windows boot security since 2011 are being replaced by a 2023 certificate family, and Windows Server instances do not receive the replacement via...

Microsoft’s February 10, 2026 ESU rollup, KB5075912, raises Windows 10 22H2 to Build 19045.6937 while quietly widening the platform-level work that will keep Secure Boot functional as Microsoft’s 2011 Secure Boot certificate authorities approach expiry later this year. The update is small on the...

Microsoft’s coordinated refresh of UEFI Secure Boot certificates has moved from advisory to operational urgency, and the monitoring-only approach using Microsoft Intune Remediations gives IT teams a non-invasive, exportable way to track which Windows endpoints have received the replacement 2023...

A careful reading of Microsoft’s short MSRC advisory shows what it actually is: a product‑scoped inventory attestation naming Azure Linux (Microsoft’s cloud‑focused Linux distribution) as a confirmed carrier of the affected open‑source code — not a categorical statement that no other Microsoft...

Microsoft has quietly started a platform‑level countdown: the Secure Boot certificates that have protected Windows boot chains since 2011 are being retired in 2026, and while Microsoft and major OEMs are pushing a coordinated replacement, a material number of machines — especially unmanaged...

Windows 10 users who thought "my PC will keep working" were given a far sharper wake-up call this week: Microsoft and its OEM partners are rolling out a coordinated Secure Boot certificate renewal that begins to take effect in June 2026, and any Windows 10 installations that are no longer...

Microsoft’s blunt reminder landed in February: the cryptographic certificates that underpin UEFI Secure Boot — the very mechanism that helps stop malware from running before Windows ever starts — are reaching the end of their designed lifetimes in mid‑2026, and the consequences for the many PCs...

Microsoft’s blunt warning about expiring Secure Boot certificates has moved from obscure infrastructure maintenance into a practical security deadline: the original Microsoft Secure Boot certificates deployed in 2011 begin expiring in June 2026, and systems that don’t receive the replacement...

Windows 10 users who think “it still boots, so I’m fine” are being handed a quietly serious maintenance problem: Microsoft is replacing the Secure Boot certificates that have underpinned Windows’ pre‑boot trust model since 2011, and machines that don’t receive the new certificates will continue...

Microsoft’s decision to rotate out 2011-era Secure Boot certificates has turned what many Windows 10 holdouts already feared into an urgent timetable: machines that remained on Windows 10 after Microsoft’s October 14, 2025 end-of-support date now face an additional, platform-level security gap...