known issue rollback

Microsoft’s October cumulative update for Windows 11 — identified as KB5066835 — was intended to harden the platform with security fixes, but it instead introduced cascading regressions that left developers, IT admins, and new Windows users scrambling. The update disabled USB input inside the...

Microsoft has issued an emergency out‑of‑band response after the October cumulative update for Windows 11 (delivered as KB5066835) produced a high‑impact regression that left USB keyboards and mice unresponsive inside the Windows Recovery Environment (WinRE), prompting a rapid remediation...

Microsoft’s October cumulative for Windows 11 (KB5066835) shipped a routine security rollup on October 14, 2025 — and within days it left many machines unable to accept USB keyboard and mouse input inside the Windows Recovery Environment (WinRE), effectively making the built‑in recovery UI...

A Windows 11 security update released in mid‑October 2025 (KB5066835, OS build 26100.6899) has introduced a serious regression: USB keyboards and mice can become completely unresponsive inside the Windows Recovery Environment (WinRE), leaving users unable to navigate recovery menus when they...

Lian Li owners reporting a disappearing L‑Connect 3 UI after Patch Tuesday’s October cumulative (KB5066835) now have a practical — if temporary — workaround: pause Windows Update, remove KB5066835, and reboot. Background / Overview Microsoft shipped the October 14, 2025 cumulative update for...

Microsoft’s October 2025 cumulative security update for Windows 11 — KB5066835 — is rolling out now, shipping important security fixes plus a modest set of user-facing improvements (including a new lightweight terminal editor “Edit,” File Explorer “AI Actions,” multi‑monitor Notification Center...

Windows 11’s 25H2 rollout landed with a familiar and unwelcome companion: early, narrowly scoped but consequential regressions that are already disrupting media playback workflows and manual update installs for a subset of users and organizations. Background / Overview Windows 11, version 25H2...

Microsoft has confirmed that Windows 11 version 25H2 is shipping with two narrow but consequential known issues — one that can block DRM‑protected playback in certain Blu‑ray/DVD and digital‑TV applications, and another that can disrupt manual .msu installations from network shares — and...

Microsoft has published KB5054156 — a tiny enablement package (eKB) that flips on Windows 11, version 25H2 for devices already running the fully patched 24H2 servicing baseline, turning a months‑worth of staged feature binaries into an active release with minimal downtime and a single restart in...

Microsoft confirmed that a change introduced in updates released on May 28, 2025 (starting with KB5058499) can cause the Windows Update Standalone Installer (WUSA) to fail with ERROR_BAD_PATHNAME when installing .msu packages from a network share containing multiple .msu files — and that...

Microsoft’s August 2025 security rollup hardened Windows Installer to close a privilege‑escalation hole, but the change has also begun prompting unexpected User Account Control (UAC) credential requests and breaking app installations for standard (non‑administrator) users across many Windows...

Last month’s Windows 11 patch KB5063878 triggered a flurry of alarm among power users and IT pros after a narrow set of SSDs began disappearing under heavy write conditions — a regression serious enough that some users experienced irrecoverable data loss. This feature walks through a practical...

Microsoft has confirmed a new compatibility problem that emerged after the August 12, 2025 cumulative security updates: a Windows Installer hardening intended to close a privilege‑escalation hole (tracked as CVE‑2025‑50173) is now triggering unexpected User Account Control (UAC) prompts for...

Microsoft’s August cumulative update intended to close a Windows Installer privilege‑escalation hole instead tightened the User Account Control (UAC) rules so aggressively that standard (non‑administrator) users now see unexpected UAC prompts and, in many cases, cannot complete everyday app...

Microsoft’s August cumulative for Windows 11 — shipped as KB5063878 (OS Build 26100.4946) on August 12, 2025 — has become the subject of two very different but intersecting headaches: an enterprise deployment regression that broke WSUS/SCCM installs (error 0x80240069) and a cluster of...

Microsoft’s August security hardening that patched a Windows Installer flaw has closed a real attack vector — but it also introduced a compatibility headache that is prompting UAC credential prompts and outright failures in environments that rely on per‑user MSI repair and advertising flows. The...

Microsoft has acknowledged a compatibility regression introduced by the August 12, 2025 cumulative Windows updates that can cause unexpected User Account Control (UAC) elevation prompts and MSI Error 1730 failures for non‑administrator users when applications trigger Windows Installer (MSI)...

Microsoft has confirmed and mitigated a compatibility regression introduced by the August 12, 2025 security update KB5063878 that caused unexpected User Account Control (UAC) prompts and failed repairs for applications using Windows Installer (MSI), with the Windows Server 2025 release-health...

Microsoft’s August cumulative update chain, notably KB5063878, introduced a hardening to Windows Installer that has forced a rethink of how User Account Control (UAC) and MSI "self‑repair" flows behave — and that hardening, while closing a real security gap (tracked as CVE‑2025‑50173), has also...

Microsoft's August 2025 cumulative updates have produced a high‑profile compatibility regression that prevents many non‑administrator users from completing per‑user MSI installations and self‑repairs, prompting emergency mitigations from Microsoft and a wave of operational guidance for IT teams...