patch tuesday

Microsoft has confirmed that the January 13, 2026 cumulative update for Windows 11 — delivered as KB5073455 for version 23H2 — introduced a configuration-dependent regression that can leave some systems unable to power off or enter hibernation: affected machines with System Guard Secure Launch...

Microsoft has started rolling out the January 2026 cumulative update for Windows 11—KB5074109—which advances affected machines to OS Build 26200.7623 (25H2) or 26100.7623 (24H2) and bundles this month's security fixes, quality improvements, and a phased distribution of updated Secure Boot...

Microsoft’s first Patch Tuesday of 2026 shipped on January 13 with a substantial Windows 11 cumulative—KB5074109—that advances consumer installs to OS Build 26200.7623 (25H2) and 26100.7623 (24H2), bundles servicing‑stack changes with the Latest Cumulative Update (LCU), and mixes security...

Microsoft has quietly adjusted the Windows 11 Media Creation Tool so the media it builds now pulls a more up‑to‑date Windows 11 image—aligning installer payloads with recent Patch Tuesday updates—and has simultaneously closed a compatibility regression that briefly broke the tool on some hosts...

Microsoft has quietly adjusted two parts of the Windows maintenance story that many users take for granted: the official Windows 11 Media Creation Tool now pulls fresher, Patch‑Tuesday‑level images (reducing the need for large post‑install updates), and Windows 11 includes a powerful, built‑in...

Microsoft has confirmed that January’s Patch Tuesday updates for Windows 11 have produced a sharply focused but disruptive regression: after installing the January 13, 2026 cumulative updates some systems running Windows 11 version 23H2 with virtualization‑based Secure Launch enabled may fail to...

A patch released in January 2026 is causing some Windows 11 PCs to restart when users try to shut them down or put them to sleep, and Microsoft has published an emergency workaround while it works on a permanent fix. Background / Overview Microsoft shipped its January cumulative updates on...

Microsoft has confirmed that its January 2026 cumulative updates introduced two separate, verified regressions: one that can block Azure Virtual Desktop (AVD) and Cloud PC authentication for some enterprise clients, and a separate issue that prevents certain Windows 11 devices with System Guard...

Microsoft shipped the January 2026 Patch Tuesday updates on January 13–14, and the result is a month dominated by fixes and risk‑mitigation rather than new consumer features: Windows 11 received the cumulative update KB5074109 (builds 26200.7623 and 26100.7623) that addresses battery, stability...

If you use Windows, Microsoft Office, Azure services, SQL Server, or Microsoft developer tools, treat the latest advisories as urgent: India’s national cyber‑security agency CERT‑In has flagged multiple high‑severity Microsoft vulnerabilities and Microsoft has issued January 2026 security...

Windows and Microsoft product users are facing renewed urgency after a flurry of security advisories and the January 13, 2026 Patch Tuesday that fixed more than a hundred vulnerabilities — including at least one flaw Microsoft says was actively exploited in the wild — and security agencies and...

Microsoft’s January Patch Tuesday for Windows 11 landed with more than the usual batch of security fixes: the cumulative update (KB5074109) published on January 13, 2026, bundles a servicing‑stack update and a set of quality changes that include compatibility shifts, a targeted fix for battery...

Microsoft released the January 13, 2026 security baseline today — published as KB5074109 — and enterprise administrators should treat this as both a mandatory security checkpoint and a practical reminder about the new Hotpatch servicing cadence for Windows 11 Enterprise (24H2 and 25H2). The...

Microsoft’s September Patch Tuesday for Windows 11 arrives as a compact but consequential rollup: KB5030219 (OS Build 22621.2283) packages a mix of security fixes, several targeted reliability patches, and a handful of small user‑facing behavior changes — most notably removing a stray Sticky...

Microsoft quietly paused non‑security preview releases for Windows 10 in December 2020, telling administrators and enthusiasts that the company would limit optional “C” (preview) releases during the Western holiday period while still delivering essential security fixes, and that normal servicing...

Microsoft has assigned CVE-2026-20949 to a Microsoft Excel “Security Feature Bypass” vulnerability disclosed as part of the January 2026 Patch Tuesday cycle; the entry appears in Microsoft's update guidance but — as is common for many office-suite security feature bypass entries — public...

Microsoft’s confirmation that CVE-2026-20873 is an elevation-of-privilege defect in Windows Management Services (WMS) changes this month’s patch calculus for administrators and incident responders: the issue is vendor-acknowledged, distributed in the January 2026 security rollup, and demands...

Microsoft’s January 2026 security update wave confirmed an elevation-of-privilege vulnerability in the Desktop Window Manager (DWM) component of Windows, tracked as CVE-2026-20871, and the vendor’s advisory attaches a “confidence” metric that explicitly signals how certain Microsoft is about the...

Microsoft’s Security Update Guide registers CVE-2026-20861 as an Elevation of Privilege vulnerability in Windows Management Services (WMS) — a management‑plane component that routinely runs with elevated privileges — and the flaw was included in Microsoft’s January 13, 2026 Patch Tuesday rollup...

Microsoft’s January 2026 security rollup includes a confirmed elevation‑of‑privilege issue affecting Windows Management Services tracked as CVE‑2026‑20923; the vendor record in the Microsoft Security Update Guide marks the flaw as an Elevation of Privilege and places it in the January 13, 2026...