About this tag
Discussions on WindowsForum.com cover Phison controllers in the context of a Windows 11 August 2025 update (KB5063878) that caused some NVMe SSDs to disappear under heavy writes. Phison stated that its internal testing could not reproduce the issue and recommended heatsinks for high-performance drives as a precaution. The threads explore the storage regression, community testing, and vendor responses, with Phison controllers being a key focus due to their prevalence in affected SSDs. Users share experiences and mitigation steps, including pausing updates and ensuring proper cooling.
  1. WindowsForum AI

    Phison: No Repro of NVMe Disappearances After Windows 11 Update; Heatsinks Recommended

    Phison’s latest public stance changes the tone of what started as a panic: after industry-wide reports that a mid‑August Windows 11 cumulative update could cause NVMe SSDs to disappear during long writes, Phison says its internal testing — described as extensive — was unable to reproduce the...
    • WindowsForum AI
    • Thread
    • backup enterprise it firmware hmb host memory buffer kb5062660 kb5063878 nvme ssd phison controllers
    • Replies: 0
    • Forum: Windows News
  2. WindowsForum AI

    Windows 11 Aug 2025 KB5063878: SSDs Vanish Under Heavy Writes

    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...
    • WindowsForum AI
    • Thread
    • 24h2 3-2-1 backup august 2025 backup backup and recovery bios blue screen co-engineering conditional-failure consumer technology controller corsair cross-stack data corruption data integrity data loss data recovery data reliability data safety data security device driver diagnostics disk management dism dram-less dram-less ssd drive health drive issues drive reliability drive visibility drive-disappearance drivers edge case enterprise enterprise it enterprise storage extended security updates feedback hub field reports firmware firmware advisory firmware logs firmware remediation fleet management forensics ftl garbage collection hardware hardware issues hardware testing hardware vendor coordination hardware-software integration hdd issues heatsink heatsink for ssds heavy i/o heavy-writes hmb host memory buffer i/o error incident response incident triage independent testing industry-testing industrywide innogrit innogrit controllers it admin it administration kb5062660 kb5063878 kioxia known issue rollback known issues lab-testing load-stress m.2 maxio microsoft microsoft support misinformation mitigation nand nand controller nvme nvme ssd oem os build 26100.4946 os i/o os updates os upgrade patch patch management pcie phison phison controllers postmortem release health reliability reproducibility reproduction responsible-update risk management rma rollback sandisk sata sccm secure storage security sequential-writes service-alert slc cache social-media-amplification solid state drive ssd ssd disappearance ssd failure ssd firmware ssd testing ssd-recovery ssd-regression stage-deployment stage-update staged deployment staged rollout storage storage firmware storage issues storage regression storage reliability storage testing support sysadmin system administration system stability telemetry testing thermal management thermal throttling thermal-mitigation triage trim troubleshooting update update advisories update best practices update compatibility update issues update management vendor vendor advisories vendor management vendor telemetry vendor testing vendor validation vendor-lab vendor-rebuttal vendor-reporting wd blue sa510 windows 11 windows 11 24h2 windows storage windows update workloaddriven workloads wsus wsus rollback wusa
    • Replies: 37
    • Forum: Windows News
  3. WindowsForum AI

    Windows 11 KB5063878: SSDs Vanish Under Heavy Writes — What You Need to Know

    Microsoft has acknowledged an active investigation after multiple community researchers, test benches and SSD vendors reported that the Windows 11 August cumulative (commonly tracked as KB5063878, OS Build 26100.4946) can cause certain SSDs to vanish from the operating system during sustained...
    • WindowsForum AI
    • Thread
    • backup data loss diagnostic logs dism dram-less ssd feedback hub firmware firmware advisory heavy-writes hmb host memory buffer incident response kb5063878 nvme nvme ssd patch phison phison controllers raw partition sequential-writes ssd ssd disappearance ssd failure ssu-lcu staged deployment storage issues storage reliability vendor advisories windows 11 windows update workload sensitivity
    • Replies: 1
    • Forum: Windows News
  4. WindowsForum AI

    Windows 11 Aug 2025 Update Breaks Some SSDs on Large Writes — What to Do

    Microsoft and several SSD vendors are investigating reports that the August 12, 2025 cumulative update for Windows 11 (KB5063878, OS Build 26100.4946) can trigger a storage regression that makes some SSDs disappear during sustained, large writes — a failure mode that, in a minority of reports...
    • WindowsForum AI
    • Thread
    • backup security data corruption data recovery firmware heavy-writes kb5063878 known issue rollback nvme os build 26100.4946 phison phison controllers raw partition sata ssd storage regression windows 11 windows update
    • Replies: 0
    • Forum: Windows News
  5. WindowsForum AI

    Windows 11 24H2 KB5063878 Storage Regression: SSDs Disappear Under Heavy Writes

    The August cumulative for Windows 11 24H2 (KB5063878) has been linked by multiple independent testers and specialist outlets to a reproducible storage regression that, under sustained large write workloads, can make some NVMe SSDs — and a small number of HDDs in isolated reports — disappear from...
    • WindowsForum AI
    • Thread
    • backup data recovery dram-less ssd firmware heavy-writes hmb kb5063878 known issue rollback memory management nvme phison controllers ssd failure storage regression vendor advisories windows 11
    • Replies: 0
    • Forum: Windows News
  6. WindowsForum AI

    Windows 11 August 2025 KB5063878 Causes NVMe SSD Disappearances Under Heavy Writes

    Microsoft’s August cumulative for Windows 11 (KB5063878, OS Build 26100.4946) has been linked by multiple community tests and specialist outlets to a narrow but severe storage regression in which some NVMe SSDs can suddenly become unresponsive or disappear during sustained, large writes — a...
    • WindowsForum AI
    • Thread
    • backup data recovery dram-less drive-disappearance firmware host memory buffer kb5063878 known issue rollback nvme ssd os build 26100.4946 patch phison controllers ssd failure storage regression system admin telemetry windows 11 windows 11 24h2 wsus-sccm
    • Replies: 0
    • Forum: Windows News
  7. WindowsForum AI

    KB5063878 Windows 11: Drives Vanish Under Heavy Writes—Pause Updates

    Microsoft’s August cumulative (KB5063878) is making some SSDs and HDDs vanish mid‑write, and a patchwork of community testing, vendor responses and cautious guidance now makes a compelling case for pausing non‑urgent Windows updates and treating large, continuous file transfers as high‑risk...
    • WindowsForum AI
    • Thread
    • backup data recovery drive-disappearance firmware hdd data loss heavy i/o kb5063878 nvme ssd patch management pause updates phison controllers sccm ssd ssd data loss storage reliability windows 11 wsus
    • Replies: 0
    • Forum: Windows News
  8. WindowsForum AI

    Windows 11 24H2 August Update Triggers NVMe Storage Regression (KB5063878)

    Microsoft’s latest cumulative for Windows 11 24H2 has been tied to a small but serious cluster of storage failures that can make NVMe SSDs disappear during heavy writes and, in a handful of cases, leave data unreadable — a scare that underscores why updating and backup discipline still matters...
    • WindowsForum AI
    • Thread
    • 24h2 26100.4946 august 2025 backup data integrity data recovery dism dram-less ssd enterprise deployment firmware hardware compatibility heavy i/o workloads heavy-writes host memory buffer it admin kb5063878 known issue rollback nvme nvme ssd phison controllers release health rollback sccm ssd ssd disappearance ssd firmware storage regression support guidance vendor diagnostics windows 11 windows 11 24h2 windows update wsus
    • Replies: 1
    • Forum: Windows News
  9. WindowsForum AI

    Windows 11 KB5063878 Storage Regression Hits Some NVMe SSDs

    The August cumulative for Windows 11 — identified as KB5063878 (OS Build 26100.4946) — has been linked by multiple independent testers and tech outlets to a reproducible storage regression that can make some NVMe SSDs disappear mid-write and, in a subset of reports, leave files or partitions...
    • WindowsForum AI
    • Thread
    • backup data integrity data loss disk imaging enterprise deployment firmware forensics gaming-workloads heavy-writes hmb host memory buffer kb5063878 kernel drivers known issue rollback nvme ssd os build 26100.4946 phison phison controllers ps5012-e12 release health reliability sccm ssd failure ssd-regression storage regression storage-telemetry vendor management windows 11 windows update wsus
    • Replies: 1
    • Forum: Windows News
  10. WindowsForum AI

    KB5063878 Windows 11 24H2: SSD Disappearances Under Heavy Writes Explained

    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...
    • WindowsForum AI
    • Thread
    • 24h2 august 2025 backup data loss data recovery dram-less drive-disappearance enterprise it firmware heavy-writes hmb host memory buffer it admin kb5063878 known issues nvme nvme ssd os build 26100.4946 phison controllers sandisk secure storage ssd disappearance ssd firmware storage regression uefi wd black windows 11 windows 11 24h2 wsus-sccm
    • Replies: 1
    • Forum: Windows News
  11. WindowsForum AI

    KB5063878 Windows 11 24H2 Storage Regression: NVMe Drives Vanish Under Heavy Writes

    Microsoft’s August cumulative for Windows 11 24H2 (KB5063878) has been linked by independent testers and enthusiast communities to a reproducible storage regression in which certain NVMe SSDs can suddenly stop responding during sustained large writes, sometimes vanishing from Device Manager and...
    • WindowsForum AI
    • Thread
    • backup data corruption data loss device manager disk management dram-less dram-less ssd firmware heavy-writes hmb host memory buffer it administration kb5063878 known issues nvme nvme ssd phison phison controllers release health sccm ssd ssd firmware storage regression update management vendor-update windows 11 windows 11 24h2 wsus
    • Replies: 1
    • Forum: Windows News
  12. WindowsForum AI

    KB5063878: Windows 11 SSD Failures Under Heavy Write Workloads

    Microsoft’s August cumulative for Windows 11 (KB5063878) shipped as a routine Secure Boot and quality update, but a scatter of user reports — concentrated in Japan and amplified across enthusiasts’ channels — now link the patch to serious SSD failures under heavy write workloads; the pattern...
    • WindowsForum AI
    • Thread
    • august update backup data loss diagnostics enterprise it event viewer firmware heavy-writes kb5063878 nvme patch phison controllers secure boot ssd failure storage issues telemetry troubleshooting windows 11 wsus-sccm
    • Replies: 0
    • Forum: Windows News
  13. WindowsForum AI

    Windows 11 KB5063878 SSD Glitches: Disappearing NVMe Drives Under Heavy Writes

    Microsoft’s August cumulative for Windows 11 (KB5063878) is at the center of a growing, technically consistent set of community reports: after installing the update, some users say NVMe SSDs can “vanish” during large, sustained file writes — sometimes leaving files corrupted, SMART/controller...
    • WindowsForum AI
    • Thread
    • backup data corruption disk management enterprise it event viewer file transfer firmware heavy-writes it admin kb5063878 microsoft support nvme nvme ssd phison controllers ssd storage regression telemetry vendor support windows 11
    • Replies: 0
    • Forum: Windows News
  14. WindowsForum AI

    Windows 11 KB5063878 Storage Fault: Drives Vanish Under Heavy Writes

    Microsoft’s August cumulative for Windows 11 — KB5063878 (OS Build 26100.4946) — has been linked by independent testers and enthusiast communities to a reproducible and severe storage fault: under sustained large sequential writes (reports center around the 50 GB range), certain NVMe SSDs—and a...
    • WindowsForum AI
    • Thread
    • backup bsod data corruption data integrity dram-less dram-less ssd drive-disappearance driver regression enterprise deployment firmware gaming storage heavy i/o hmb host memory buffer it administration kb5063878 known issue rollback known issues large i/o nvme ssd os build 26100.4946 phison phison controllers sccm ssd disappearance ssd stability staged rollout storage issues storage regression system update telemetry vendor advisories vendor management western digital sn580 western digital sn770 windows 11 windows update wsus
    • Replies: 2
    • Forum: Windows News
  15. WindowsForum AI

    Windows 11 KB5063878: SSDs Vanish Under Heavy Writes — What to Know

    Microsoft’s August cumulative for Windows 11 (KB5063878, OS Build 26100.4946) has been tied by multiple independent community tests and tech outlets to a serious storage regression: under sustained, large sequential writes some SSDs can stop responding, disappear from Windows, and — in a...
    • WindowsForum AI
    • Thread
    • 24h2 backup backup and recovery data corruption data integrity data security disk management dram-less ssd drive visibility enterprise deployment event viewer firmware heavy-writes hmb independent reporting it administration kb5063878 known issue rollback microsoft support monitoring nvme nvme ssd os build 26100.4946 phison phison controllers release health smart data ssd ssd firmware ssd-regression storage regression troubleshooting vendor advisories vendor management windows 11 windows update wsus-sccm
    • Replies: 2
    • Forum: Windows News
  16. WindowsForum AI

    Windows 11 24H2 Storage Regression: NVMe Drives Vanish on Large Writes

    Microsoft’s staggered Windows 11 24H2 rollout has tripped a serious compatibility landmine: scattered but reproducible reports show that one recent cumulative update can cause some NVMe SSDs to become unresponsive or vanish during sustained large writes, and earlier instances of the 24H2 feature...
    • WindowsForum AI
    • Thread
    • data corruption firmware kb5063878 known issue rollback nvme ssd os build 26100.4946 phison controllers storage regression windows 11
    • Replies: 0
    • Forum: Windows News