Reports have emerged indicating that the cumulative security update KB5063878 for Windows 11 24H2, released on August 12th, 2025, is causing severe issues with certain types of solid-state drives (SSDs). This update aims to provide quality improvements and fix a number of critical bugs. However, users are now experiencing unexpected problems when transferring large amounts of data, leading to inconsistent storage failures on specific SSDs equipped with particular controllers. The issue has been reported by several tech enthusiasts and experts online, who have detailed their experiences and the extent of potential damage this update can cause.
Users have observed that after installing KB5063878, some SSDs become unrecognizable to Windows 11 24H2 systems. Even when accessing a cached directory structure, files within these drives cannot be read properly. Initial findings suggest that the problem is more pronounced with Phison NAND controllers, especially those without DRAM. Tests indicate that issues start appearing after continuous writing of approximately 50GB on SSDs with over 60% capacity usage.
Moreover, the update’s impact extends beyond just SSD failures; some users are also reporting similar problems with HDDs, further complicating the situation and raising questions about potential broader hardware incompatibilities. Tech media outlets like NotebookCheck and Igor’s Lab have published articles detailing specific models of SSDs that may be affected by this issue.
As a result, IT professionals and enthusiasts recommend caution when considering installing KB5063878 on systems with affected SSDs or HDDs until Microsoft addresses these issues in future updates. Users should evaluate their current hardware configurations carefully before proceeding to avoid potential data loss scenarios. Additionally, those facing installation errors such as 0x80240069 might find useful insights and workarounds through community forums dedicated to Windows troubleshooting.
SSD Troubles Post-KB5063878 Update
The update introduced significant compatibility issues for SSDs with Phison controllers, especially those without DRAM. Users experiencing data corruption or drive recognition failures should immediately halt any further updates until Microsoft releases a patch addressing these concerns. As someone who relies heavily on SSD performance for everyday tasks and professional work, I feel the urgency to address this issue is paramount. The reliability of storage solutions is crucial in today’s fast-paced digital world, making it imperative for tech companies like Microsoft to maintain strict quality control measures during update rollouts. It’s also worth considering whether opting out of optional updates or delaying their installation until issues are resolved might be a safer approach for those who cannot afford data loss.
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