known issues

Microsoft's first cumulative Windows 11 update of 2026 — delivered as KB5074109 on January 13 — has left a broad trail of disruption: critical security fixes were installed, but several high-impact regressions followed, forcing Microsoft into rapid damage control with out‑of‑band patches and...

Microsoft has formally acknowledged that several high‑visibility Windows 11 UI behaviors — previously tracked against the 24H2 servicing branch — are also affecting some devices running the 25H2 branch, with Microsoft publishing Known Issue guidance and temporary mitigations after widespread...

Microsoft’s December 1, 2025 optional preview for Windows 11 — delivered as KB5070311 (with a paired servicing stack update KB5071142) — is a focused, pragmatic tranche of changes that mixes long‑awaited visual polish and Settings consolidation with a fresh set of Copilot‑adjacent AI...

Microsoft pushed a focused Release Preview package on December 1, 2025 — KB5070311 — that updates Windows 11 on both the 24H2 and 25H2 servicing tracks (OS Builds 26100.7309 and 26200.7309) and pairs modest but widely useful UI polish with device‑gated Copilot+ improvements and an important...

Microsoft has acknowledged a persistent Windows 11 bug that makes the password icon disappear from the lock‑screen sign‑in options, and — crucially for many users — there is no immediate, widely distributed fix: the icon is invisible but still functional, and Microsoft’s public guidance for...

Microsoft has confirmed a Windows 11 bug that makes the small password sign‑in icon invisible on the lock screen’s “Sign‑in options,” and the company’s temporary fix is effectively: hover where the icon should be and click the invisible placeholder to reveal the password box. Background /...

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 has confirmed a set of known issues in Windows 11 version 25H2, the 2025 feature update now rolling out to consumer and enterprise devices, and some of those bugs carry practical impact for media playback, update installation workflows, and certain device architectures. Microsoft’s...

Microsoft's September cumulative for Windows 11 (KB5065426) landed as a routine Patch Tuesday release but quickly became a headache for many users: installers fail with a slew of cryptic error codes, Microsoft Update Catalog packages sometimes abort mid‑install, and, in a number of reports...

Microsoft has marked a months‑old audio compatibility problem that blocked a subset of devices from receiving the Windows 11, version 24H2 feature update as resolved, after a vendor driver was published via Windows Update and the compatibility safeguard (safeguard ID 54283088) was removed for...

Microsoft released Windows 11 Insider Preview Build 26120.6682 (KB5065782) to the Beta Channel on September 12, 2025 — a targeted maintenance-and-experience flight for PCs running Windows 11, version 24H2 that layers incremental Copilot-era UX polish, accessibility improvements, and a handful of...

Microsoft pushed the September 2025 Patch Tuesday rollup to Windows 11 today, a cumulative release that—according to community reporting—carries the usual mix of security fixes, quality improvements and targeted Copilot reliability updates, but also surfaces a handful of user-facing regressions...

Microsoft’s latest Canary-channel whisper — reported as Windows 11 Insider Preview Build 27938 — brings a practical blend of AI-powered shortcuts in File Explorer and a small but widely requested UI restoration: a larger Notification Center clock that shows seconds. The headline items are...

Microsoft has quietly closed the loop on a recent Event Viewer nuisance in Windows 11 by shipping a targeted fix in the August preview update, addressing repeated CertificateServicesClient log entries that were cluttering system logs and unnerving admins despite posing no functional harm...

A wave of community test results and vendor confirmations this week has put the latest Windows 11 cumulative update under a harsh spotlight: several SSDs can disappear from Windows during sustained, large write operations after installing the August 12, 2025 update (KB5063878), with a...

Silicon Motion's early reassurance — that “so far, none of our controllers are affected” by the Windows 11 update that has been making some NVMe drives disappear under sustained writes — is an encouraging datapoint, but it is provisional and incomplete: the incident remains an active...

Silicon Motion has told at least one forum poster that “none of our controllers are affected” by the Windows 11 storage regression that surfaced after Microsoft’s August 2025 cumulative update — but the larger picture remains unsettled and users should treat that single claim cautiously while...

Microsoft released Windows 11 Insider Preview Build 27928 to the Canary Channel on August 20, 2025, and the flight is a concise but telling example of what the Canary track is for: low-latency platform experiments, targeted rollouts, and rapid iterations that can both surface neat usability...

The Windows update ecosystem once again landed in the headlines this month after community researchers and multiple publications raised alarms about KB5063878 — the August 12, 2025 cumulative update for Windows 11 24H2 — and claims that a sustained-write workload can make some NVMe SSDs...

Microsoft’s August cumulative for Windows 11 has left a trail of disrupted installs and disappearing NVMe drives, and Phison — maker of widely used SSD controllers including the PS5012‑E12 — has confirmed it is investigating reports that the updates KB5063878 and KB5062660 can trigger...