kb5063878

The August cumulative update for Windows — most notably KB5063878 (Windows 11 24H2, OS Build 26100.4946) and companion rollups for Windows 10 — has been identified as the root cause of a wave of streaming and system problems that emerged in mid‑August and persisted into September, producing...

Microsoft and community reports confirm that the August 12, 2025 cumulative update for Windows 11, version 24H2 (KB5063878, OS build 26100.4946) experienced delivery failures when distributed through on‑premises update infrastructure—principally Windows Server Update Services (WSUS) and...

Windows 11 users faced a sudden and alarming data‑integrity scare when an August cumulative update was linked to a reproducible failure mode that can make certain SSDs “vanish” from the operating system during sustained, large writes — a problem that can truncate files, corrupt partitions, and...

A sudden wave of reports last month that solid‑state drives were vanishing from both File Explorer and UEFI/BIOS left Windows 11 users alarmed — but the truth, based on community forensics and vendor testing, is more complicated than a simple “bad Windows update” narrative. Background / Overview...

In a story that moved swiftly from Reddit threads to high-traffic YouTube videos and mainstream tech headlines, recent reports blamed Microsoft's Windows 11 updates (notably KB5063878 and KB5062660) for a rash of SSD failures. The picture that has emerged after vendor investigations is more...

Microsoft and Phison have jointly reframed a mid‑August wave of alarming NVMe disappearances and alleged “bricking” incidents: the most credible working explanation now centers on pre‑release engineering firmware present on a small subset of drives, not an inherent, platform‑wide flaw introduced...

Microsoft and Phison are publicly at odds over whether last month’s Windows 11 cumulative update (commonly tracked as KB5063878) caused data-loss and device‑disappearance issues on some NVMe SSDs — and the debate reveals a messy intersection of community test benches, vendor lab validation...

A fresh line of forensic work from community labs suggests the wave of disappearing and allegedly “bricked” NVMe SSDs that alarmed Windows users in August may not be a mass Windows regression at all, but instead a narrower supply‑chain and firmware‑provenance problem: pre‑release (engineering)...

Windows 11 users and system builders were jolted in mid‑August when a flurry of reports described NVMe SSDs suddenly disappearing, corrupting files or becoming completely inaccessible during large, sustained writes — an incident initially blamed on Microsoft’s August cumulative update...

Phison’s pre-release controller firmware has emerged as the most plausible explanation for the wave of NVMe SSD “vanishing” and bricking reports that followed Microsoft’s mid‑August Windows 11 cumulative updates — a finding that reframes the incident from a suspected OS regression into a...

The short version: the recent wave of reports that Windows 11’s August cumulative update (KB5063878) was “bricking” NVMe SSDs has been reframed by community investigators and vendor labs — the immediate trigger appears to have been pre‑release engineering firmware on a small subset of drives...

Microsoft’s August Windows 11 patch is no longer the prime suspect in the recent wave of “vanishing” NVMe drives — mounting evidence points to pre‑release controller firmware and supply‑chain provenance, not the KB5063878/KB5062660 updates themselves, as the root trigger in the cases...

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...

Phison has publicly acknowledged and replicated a key finding first raised by the PCDIY community: a wave of disappearing and allegedly “bricked” NVMe SSDs linked in timing to Windows 11’s August cumulative update (KB5063878) appears to have been driven, in at least some test cases, by...

Phison’s latest public testing and fresh community forensics have changed the tone of an urgent story that began as “Windows 11 is killing SSDs” and quickly morphed into a complex investigation at the intersection of OS updates, controller firmware, and supply‑chain quirks — with no single party...

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...

A cluster of community test benches and vendor statements now point to a supply‑chain firmware issue — not a Windows code regression — as the most plausible explanation for the mid‑August reports of NVMe drives “vanishing” during large sequential writes after the Windows 11 August cumulative...

This week’s Windows news cycle offered a dense mix of operational updates, surprising bugs, and quietly consequential releases: Microsoft pushed Windows 11 version 25H2 into the Release Preview channel as an enablement package, then quietly edited its blog to say the promised ISOs are “delayed...

Microsoft Weekly: what happened with the SSD scare, the 25H2 ISO delay, and what you should actually do now Summary (quick) A widely shared set of social-media reports in August 2025 claimed the August cumulative security update for Windows 11 (KB5063878 / 24H2 servicing stream) was causing...