The latest Windows cumulative update has landed with a thud: a growing number of users report that Windows 11 version 24H2’s August security rollup (KB5063878, OS Build 26100.4946) can make drives disappear under heavy I/O, and the fallout has reignited debates about privacy, platform stability...
26100.4946
ai privacy
copilot+
data backup
data recovery
drives vanish
dual boot
firmware update
hdd
heavy io
i/o errors
it admins
kb5063878
linux migration
recall feature
ssd
storage stack
windows 11
windows updates
wsus
Microsoft’s upgrade machinery is currently offering Windows 11 24H2 to machines that, on paper, fail the company’s minimum security requirements — including systems with TPM 2.0 disabled — and multiple independent reports suggest this is happening to both consumer and enterprise devices...
A Windows 11 cumulative update released on August 12, 2025 — KB5063878 (OS Build 26100.4946) — has been linked by multiple community tests and specialist outlets to a potentially serious storage regression that can make some NVMe SSDs disappear from the operating system during large, sustained...
Microsoft has pushed a targeted rollback and policy fixes to repair a Windows Update Standalone Installer (WUSA) regression that could break .msu installations when run from network shares and disrupt enterprise update pipelines that rely on WSUS, SCCM, or scripted WUSA deployment. d delivery...
Windows 11’s built‑in antivirus, Microsoft Defender, is normally updated automatically through Windows Update — but when that pipeline falters, administrators and power users must know how to update Defender manually, safely, and at scale to avoid windows of exposure that attackers will happily...
Microsoft’s August cumulative for Windows 11 (KB5063878, OS Build 26100.4946) shipped with security fixes — and within days the patch was linked to two very different reliability problems: an enterprise deployment failure that produced WSUS/SCCM install errors, and a separate cluster of...
0x80240069
august 2025
backups
data integrity
data loss
enterprise it
firmware
kb5063878
nvme
os build 26100.4946
patch tuesday
phison
sccm
ssd
storage regression
troubleshooting
windows 11
windows release health
wsus
A serious storage regression tied to Microsoft’s August cumulative update for Windows 11 — KB5063878 (OS Build 26100.4946) — has surfaced in the wild: users and independent testers report that sustained, large file writes can cause some NVMe SSDs to stop responding, disappear from Windows, and...
A mid‑August cumulative update for Windows 11 — KB5063878 (OS Build 26100.4946), released on August 12, 2025 — is being linked by multiple independent community tests and tech outlets to a storage regression that can render some SSDs inaccessible after sustained, large sequential writes, with...
backup
data corruption
disk management
dram-less
firmware
hmb
it administration
kb5063878
nvme
os build 26100.4946
phison
sccm
smart data
ssd failure
storage regression
windows 11
windows updates
wsus
Microsoft’s August cumulative for Windows 11 (KB5063878, OS Build 26100.4946) has been tied in independent community testing and aggregation threads to a serious storage regression that can render certain NVMe SSDs inaccessible during large, sustained write operations — and administrators also...
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...
Microsoft’s August cumulative update for Windows Server 2019, KB5063877 (released August 12, 2025), finally closes out a high‑visibility clustering regression introduced by the July rollout: a Cluster Service failure that caused repeated service restarts, node quarantines and virtual machine...
Microsoft’s August Windows 11 patch cycle has produced two very different but equally alarming headlines this week: an emergency mitigation for enterprise update delivery failures, and community reports that the same cumulative update may be triggering storage devices to become unreadable or...
0x80240069
august 2025
data backup
data loss
dram-less
enterprise it
install failure
kb5063878
kernel driver
mecm
nvme
phison
release health
sccm
servicing stack
ssd failures
storage disappearance
vendor advisories
windows 11
wsus
Microsoft's August cumulative update for Windows 11 (KB5063878, OS Build 26100.4946) has been linked in community reports to NVMe SSDs becoming inaccessible after sustained, heavy file writes — an issue that has reopened concerns about storage stability in the 24H2 branch and forced a cautious...
Microsoft’s August cumulative for Windows 11 (KB5063878) promised performance and security fixes, but within days it became the focal point of two separate reliability incidents: an enterprise deployment failure that blocked WSUS/SCCM installs and, more alarmingly, early community reports that...
0x80240069
backups
data loss
enterprise it
firmware
hdd
hmb
kb5063878
known issue rollback
nvme
phison
release health
reliability
sccm
ssd
storage
windows 11
windows 11 24h2
windows update
wsus
Microsoft's August cumulative for Windows 11 version 24H2 (KB5063878, OS Build 26100.4946) has sparked a new round of alarm in the storage community: multiple reports say the patch is associated with drives disappearing, SMART information becoming unreadable, and — in at least some cases...
Microsoft has quietly changed how the Microsoft Store handles app updates on Windows 11 and Windows 10: the long-standing option to permanently turn off automatic app updates in the Store UI is being removed for many users, and instead the Store now only offers time-limited pause options...
Microsoft has confirmed three distinct issues tied to the August 12, 2025 cumulative security update for Windows 11 version 24H2 (KB5063878), affecting enterprise update channels and producing noisy, though largely nonfunctional, error logs on some devices; Microsoft has issued rollbacks...
Microsoft's warning about servicing Windows installation images with a fresh Microsoft Defender package is a timely reminder that new installations can inherit an invisible security gap: the antimalware binaries and definitions embedded in ISO/WIM/VHD images become stale the moment an image is...
Microsoft pushed a targeted re-release and mitigation for the August 2025 Windows 11 24H2 cumulative update (KB5063878) after enterprise customers reported widespread WSUS/SCCM delivery failures that surfaced as error code 0x80240069 — Microsoft acknowledged the problem and rolled a containment...
Microsoft has acknowledged an emergency problem with the August 12, 2025 cumulative update for Windows 11 (KB5063878), after enterprise administrators reported widespread installation failures when the package is delivered through Windows Server Update Services (WSUS) and System Center...
0x80240069
24h2
adml
admx
enterprise update
group policy
intune
kb5063878
kir
known issue rollback
microsoft update catalog
msu
os build 26100.4946
patch management
sccm
update troubleshooting
windows 11
windows update
wsus