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 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...
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 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 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
Microsoft has confirmed that the August cumulative update for Windows 11 version 24H2 (KB5063878, OS Build 26100.4946) is failing to install on some enterprise-managed endpoints delivered via WSUS and SCCM, and Redmond has published a Known Issue Rollback (KIR) policy that administrators can...
Microsoft has confirmed that the August 12, 2025 cumulative update for Windows 11, KB5063878 (OS Build 26100.4946), can fail to install on enterprise endpoints when delivered via Windows Server Update Services (WSUS) or System Center Configuration Manager (SCCM/MECM), producing the error code...
Microsoft’s August cumulative update for Windows 11 (KB5063878) is failing to install on a subset of systems—most notably enterprise devices serviced through WSUS and ConfigMgr—and administrators are being given a short list of containment options that trade speed for scope and safety. view
The...
Microsoft has confirmed that the August 12, 2025 cumulative update for Windows 11 version 24H2 (KB5063878, OS Build 26100.4946) is failing to install on enterprise-managed devices when delivered via WSUS and SCCM, producing the Windows Update error code 0x80240069; Redmond is rolling a temporary...
0x80240069
enterprise it
group policy
intune
kb5063878
kir
known issue rollback
manual install
mecm
microsoft release health
os build 26100.4946
registry override
sccm
servicing stack update
update troubleshooting
windows 11
windows update
wsus
Microsoft has confirmed that the Windows 11 August 2025 cumulative update (KB5063878) is causing installation failures in certain enterprise scenarios and has pushed an emergency mitigation while engineers work on a permanent fix. The issue surfaces as error code 0x80240069 when updates are...
0x80240069
certenroll
enterprise it
event viewer
kb5063878
kir
known issue rollback
mecm
media creation tool
microsoft update catalog
powershell
registry override
release health
sccm
update failures
windows 11
windows 11 24h2
windows update agent
wsus
wuauserv
Microsoft has set a firm date: Windows 11, version 23H2 (consumer editions) will stop receiving security and quality updates on November 11, 2025, forcing Home and Pro users who remain on that release to upgrade or accept growing security, compliance, and operational risk. (learn.microsoft.com)...
23h2
device inventory
end of support
end of updates
enterprise education
esu
home pro
intune
lifecycle
migration plan
pilot testing
rollout strategy
sccm
security updates
upgrade plan
windows 10 eos
windows 11
windows 11 se
windows update for business