certificate rotation

Microsoft's original Secure Boot certificates—the cryptographic anchors that validate everything that runs before Windows—are entering a hard operational deadline that will force Windows Server administrators to act now: certificates issued around 2011 begin expiring in June 2026, and servers...

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...

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 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’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...

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’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 and the PC industry have quietly opened a narrow but critical window to prevent a pre‑OS security gap this year: Windows will start rolling replacement Secure Boot certificates into device firmware via staged OS updates, while Microsoft is simultaneously intensifying its public push...

IT administrators now have practical, fleet-scale ways to check whether Windows devices are carrying the updated Secure Boot certificate chain and whether they’re ready to accept the upcoming Secure Boot updates — a crucial capability as Microsoft and OEMs rotate the platform’s cryptographic...

Microsoft’s Secure Boot trust anchors — the firmware‑provisioned certificates that validate bootloaders and the Windows boot manager — are approaching end‑of‑life, and the coordinated replacement process introduced by Microsoft and OEMs is now the single most urgent operational task for Windows...

Microsoft has opened the conversation: an Ask Microsoft Anything (AMA) session on December 10 will walk IT teams through the new Secure Boot playbook and the practical steps required to update expiring Secure Boot certificates before they begin to lapse in June 2026. The conversation matters...

Microsoft’s sample PowerShell inventory script for Secure Boot is a compact, practical starting point for IT teams that must assess firmware readiness ahead of the platform-wide Secure Boot certificate rotation and associated mitigation work. The script is intentionally procedural—capturing...

The tools and knobs you need to avoid a mid‑2026 Secure Boot disruption are now available — but this is not a “set it and forget it” operation. Organizations must inventory, pilot, coordinate with OEMs, and execute a staged rollout to ensure UEFI Secure Boot trust anchors are rotated to the 2023...

Microsoft’s September preview update for Windows 11, KB5065790 (Build 22631.5984), is routine on the surface—a compact, non‑security “C” release with a handful of reliability fixes—but it carries a far more consequential follow‑on: Microsoft warns that Secure Boot certificates issued around 2011...

Microsoft’s Secure Boot certificate rotation is no routine patch — it is a coordinated, firmware‑adjacent program that replaces the 2011 signing certificates with a 2023 family of CAs, installs a new boot manager signed by that chain, and (optionally) applies revocations and Secure Version...

Microsoft’s September preview update pushed an urgent reminder to IT teams and advanced users: Secure Boot certificates used broadly across Windows devices are scheduled to start expiring in June 2026, and without coordinated firmware and OS updates some machines may be unable to boot securely...

Microsoft has begun a strict, time‑boxed push to move Exchange hybrid customers off a Microsoft‑managed shared service principal and onto a dedicated Exchange hybrid app in Entra ID — a change driven by a high‑severity hybrid vulnerability and enforced through short, scheduled EWS traffic blocks...