You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser.
driver regression
About this tag
The tag 'driver regression' on WindowsForum.com covers instances where a Windows update introduces a fault that degrades or breaks hardware functionality that previously worked. A prominent example is the Windows 11 KB5063878 cumulative update, which has been linked to a severe storage fault. Under sustained large sequential writes, certain NVMe SSDs and some HDDs can become unresponsive, disappear from the OS, and present unreadable SMART data, sometimes causing file-system corruption and data loss. The issue appears to over-represent Phison-based controllers, especially DRAM-less or older families, but is not limited to a single vendor. This tag is relevant for users troubleshooting post-update hardware failures.
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
bsod
data corruption
data integrity
dram-less
dram-less ssd
drive-disappearance
driverregression
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