Microsoft has released the September 2025 cumulative security update for Windows 11, version 24H2 — KB5065426 (OS Build 26100.6584) — a combined Latest Cumulative Update (LCU) and Servicing Stack Update (SSU) that delivers security hardening, targeted bug fixes, AI component updates for Copilot+...
Microsoft’s optional August preview for Windows 11 24H2—packaged as KB5064081 and advancing eligible systems to OS Build 26100.5074—arrives as a substantial mix of staged AI features, UI polish and reliability fixes, plus an updated servicing stack that administrators should treat carefully...
24h2 preview
ai features
click to do
cpu metrics
file explorer ai actions
gating rollout
kb5064081
lock screen widgets
notification center seconds
recall homepage
settings agent
ssulcu
task manager
taskbar search grid
text and image generation controls
windows 11
windows 11 24h2
windows backup for organizations
windows hello
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...
Microsoft has quietly closed a painful upgrade gap: after days of user reports and frantic troubleshooting, the Windows Setup error that surfaced as 0x8007007F during certain in‑place upgrades has been resolved and recovery/reset regressions have been mitigated with targeted out‑of‑band updates...
0x8007007f
august 2025 patch tuesday
deployment planning
it admin guide
kb5066187
kb5066188
kb5066189
log files
mdm remotewipe
out-of-band updates
reset this pc
servicing stack
setupdiag
ssulcu
windows 11 24h2
windows server 2025
windows servicing
windows setup error
windows upgrade