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...
backup
backups
bsod
controller firmware
data corruption
data integrity
dram-less nvme
dram-less ssd
drive disappears
driverregression
enterprise deployment
firmware update
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 disappearing
ssd stability
staged rollout
storage failure
storage regression
system update
telemetry
vendor advisories
vendor guidance
western digital sn580
western digital sn770
windows 11
windows update
wsus
