secure boot

Microsoft’s March 10, 2026 Out‑of‑Box Experience (OOBE) update for Windows 11, version 26H1 (KB5081921) serves as more than a routine setup tweak: it arrives as a timed alert and practical nudge for administrators and device owners to prepare for a coordinated rotation of the Secure Boot...

Microsoft’s March 10, 2026 Safe OS Dynamic Update (KB5079463) is a quiet but urgent operational bulletin: the long‑running Secure Boot certificates that Microsoft provisioned around 2011 begin to expire in mid‑2026, and while Microsoft and OEM partners are rolling a replacement “2023 CA” family...

Microsoft’s March 10, 2026 Out‑of‑Box Experience (OOBE) update for Windows 11, version 26H1 (KB5082960) arrived amid a far larger, time‑sensitive platform event: a planned, ecosystem‑wide refresh of the Secure Boot certificate chain because Microsoft‑issued UEFI certificates from 2011 begin...

Microsoft has published a targeted Safe OS Dynamic Update (KB5079471) for Windows 11, versions 24H2 and 25H2, and alongside it reiterated a hard operational deadline: the Microsoft Secure Boot certificates first issued around 2011 will begin expiring in June 2026, and devices that do not receive...

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...

Microsoft has quietly accelerated a platform-level Secure Boot certificate refresh for Windows 11 — one that replaces long‑lived Microsoft UEFI certificates issued around 2011 with a new 2023 certificate family so devices remain able to trust and receive pre‑boot security updates after those...

A quiet but consequential deadline is coming for Windows machines: the long‑lived Secure Boot certificates that Microsoft provisioned beginning in 2011 are set to begin expiring in June 2026, and while Microsoft and many OEMs are pushing replacement certificates to devices automatically, a...

Microsoft has quietly started delivering a critical Secure Boot certificate refresh to more Windows 11 PCs, a timed, multi-stage update designed to replace aging UEFI signing certificates issued around 2011 with a new 2023 certificate family so devices keep trusting boot components and continue...

Microsoft quietly refreshed and republished detailed Secure Boot FAQ content this winter, restoring step‑by‑step guidance and timeline clarity as the industry races toward the mid‑2026 expiration of several long‑running UEFI signing certificates. The updated FAQ and related Microsoft posts make...

Windows Update is quietly delivering a “Secure Boot Allowed Key Exchange Key (KEK) Update” to more Windows 11 PCs this week — a small, low‑visibility package that installs new Secure Boot certificate material into firmware-managed variables, requires a reboot to finish, and is part of a...

Microsoft quietly removing an official workaround from its Windows support documentation has quietly raised the stakes for anyone running older PCs who still hoped to upgrade to Windows 11 without swapping hardware — and it changes how savvy users, IT pros, and hobbyists should approach upcoming...

Microsoft and major OEMs are executing a coordinated, time‑bound refresh of the Secure Boot certificate anchors that protect the Windows pre‑boot environment — a change every Windows administrator and power user must treat as an operational deadline, not optional housekeeping...

Microsoft has issued a platform-level warning: the Secure Boot certificates first issued around 2011 that underpin Windows’ pre-boot trust model begin expiring in June 2026, and although most updated systems will continue to boot, devices that do not receive the replacement certificate family...

Microsoft’s February update cycle delivered more than the usual bug fixes: it set the stage for several operational shifts IT teams must plan for now if they want to avoid disruption later this year. From a looming Secure Boot certificate lifecycle cliff to built‑in security telemetry (native...

Microsoft’s quietly published February 24, 2026 platform updates — KB5079271 (a Setup Dynamic Update) and KB5079270 (a Safe OS / WinRE Dynamic Update) — target the under‑the‑hood plumbing that runs before Windows fully boots and during feature upgrades, and they carry an urgent operational...

Microsoft quietly shipped a pair of targeted Windows 11 updates on February 24, 2026 — a Setup Dynamic Update (KB5079271) and a Safe OS / WinRE refresh framed in public documentation as KB5079270 — while Windows’ file-management surface also saw parallel refinements: Microsoft is testing an...

Microsoft’s February preview update for Windows 11 made two small-but-visible changes that matter to everyday users: the taskbar battery icon has been reworked with colour cues and a visible percentage option, and the redesigned Start menu is being flipped on for more devices. At the same time...

Microsoft and the PC ecosystem have quietly but urgently published a set of new, practical resources for rolling Secure Boot certificate updates across cloud-hosted and managed desktop environments — specifically Azure Virtual Desktop (AVD), Windows 365 (Cloud PC), and Microsoft Intune. These...

Microsoft has notified the Windows ecosystem of a far-reaching, time‑bound change: the Secure Boot certificates that Microsoft issued around 2011 will begin expiring in mid‑2026, and a coordinated replacement (the 2023 certificate family) is being delivered now to prevent a calendar‑driven...

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...