secure boot

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...

Microsoft’s latest Secure Boot certificate refresh has turned an already uncomfortable moment for Windows 10 holdouts into a ticking clock: machines that didn’t move to a supported Windows release by October 14, 2025 now face not only the end of monthly security fixes but also the prospect of...

Your PC’s ability to boot tomorrow depends on digital trust decisions made years ago — and those cryptographic certificates are about to reach their end-of-life in mid‑2026 unless your machine has already been updated. Background: why this matters now Secure Boot is the pre‑OS gatekeeper that...

Microsoft has quietly started the work that will prevent a class of very old Secure Boot signing certificates — the ones first shipped in 2011 — from being usable after they expire between June and October 2026, and that work matters for anyone who cares about boot‑time integrity on Windows...

Microsoft will begin delivering a coordinated refresh of Secure Boot certificates through Windows Update in March 2026, a multi‑stage effort designed to replace the aging 2011 trust anchors before they begin expiring in mid‑2026 and to preserve pre‑boot security and updateability across millions...

Microsoft’s staged refresh of the Secure Boot signing chain is working exactly as designed — it is a phased, telemetry-gated update that may produce informational TPM‑WMI events (including Event ID 1801) and transient “under observation” messages in Event Viewer, but those logs alone are not a...

Microsoft has quietly pushed a set of behind‑the‑scenes dynamic updates for Windows 11 that refresh the Windows Recovery Environment (WinRE) and change how the Boot Manager is signed under UEFI Secure Boot — changes that administrators, OEMs, and power users must treat as image‑level...

Microsoft quietly shipped a set of behind‑the‑scenes Windows 11 dynamic updates on February 10, 2026 — KB5077178, KB5077180, KB5076124, and KB5077374 — that refresh the Windows Recovery Environment (WinRE) and Setup binaries, and one of those Setup updates contains a consequential change to the...

Microsoft shipped a set of behind‑the‑scenes Windows 11 dynamic updates on February 10, 2026 — KB5077178, KB5077180, KB5076124 and KB5077374 — that target the Windows Recovery Environment (WinRE) and setup binaries, and one of those setup updates includes a consequential Secure Boot signing...

Microsoft's February Patch Tuesday closes a turbulent month for Windows with cumulative fixes that patch actively exploited flaws, roll forward January's out‑of‑band repairs, and — in a high‑impact operational move — continue a staged replacement of Secure Boot signing material on eligible...