secure boot

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...

Microsoft’s phased replacement of the aging Secure Boot certificate chain — the move from the 2011 trust anchors to the Windows UEFI CA 2023 family — is now visible in Event Viewer and Windows update notes, but you don’t need to panic. The logs many people see right now (TPM‑WMI entries such as...

Microsoft is using the regular Windows Update channel to rotate Secure Boot certificates on existing devices so that systems that rely on the original 2011 Microsoft Secure Boot certificates do not slip into a degraded security state when those certificates begin to expire between June and...

Microsoft has quietly begun a phased rollout that updates the digital certificates used by Secure Boot on Windows devices — a preemptive, ecosystem-wide refresh meant to prevent an impending expiration of long-lived 2011-era certificates and to preserve the integrity of boot‑time protections...

Microsoft’s warning that the Secure Boot certificates issued during the Windows 8 era are being retired in 2026 is not a hypothetical maintenance note—it’s a scheduled refresh of the cryptographic trust anchors that run before Windows even starts, and it has meaningful operational and security...

Microsoft has quietly started refreshing the Secure Boot certificate chain that underpins Windows platform security to prevent a looming trust break when Microsoft‑issued Secure Boot certificates first issued around 2011 begin to expire in mid‑2026. Background UEFI Secure Boot is the...

Microsoft has issued a coordinated warning: the original Secure Boot certificates that have underpinned Windows platform integrity since 2011 are reaching the end of their lifecycle, and a deliberate, ecosystem-wide refresh is required before mid‑2026 to avoid a progressive loss of...

Microsoft’s blunt deadline for Windows 10 users — upgrade before June or accept a “degraded security state” — is not hype: it reflects a real, measurable change in how the Windows boot chain will be trusted going forward, and it forces consumers and IT teams to choose between upgrading...

Microsoft’s timeline for the Secure Boot certificate refresh has moved from advance warning to an operational deadline: the long‑running Microsoft Secure Boot trust anchors issued in 2011 begin to expire in mid‑2026, and while Microsoft and OEMs have already built and started shipping a...

Microsoft has issued an urgent security warning for Windows 10 users after revealing that the original Secure Boot certificates—first shipped in 2011—will begin expiring in June 2026, and that affected devices will need updated certificates or an active Extended Security Updates (ESU) enrollment...

Microsoft has quietly sounded the alarm: the Secure Boot certificates that underpin the Windows platform’s pre-boot trust model are reaching the end of their planned lifespan this year, and organizations and consumers alike need to act now to avoid degraded boot security, compatibility problems...

Microsoft is quietly rolling out a replacement for long‑lived Secure Boot certificates first issued in 2011, and while Microsoft and OEMs say most modern PCs will receive the new 2023 certificate family automatically, a material minority of systems—especially unmanaged Windows 10 machines not on...