In August 2025, Microsoft released the cumulative update KB5063878 for Windows 11 24H2. This update includes quality improvements and security patches. However, subsequent reports from Japan have highlighted severe issues with certain SSDs when transferring large data sets after installing this update. Users experienced unrecognizable SSD drives, leading to potential data loss. The problem seems more pronounced in SSDs with Phison NAND controllers, particularly those without DRAM under low write volumes. Microsoft and Phison are collaborating to investigate the issue and potentially address it through firmware updates provided by SSD manufacturers.
Third-Party Verification: Bleeping Computer reported that Microsoft is aware of these reports and is working closely with partners like Phison to understand and resolve the issues. They have also requested feedback from customers experiencing problems following the update installation, suggesting a proactive approach in addressing potential hardware compatibility concerns.
External Perspective on Windows Update Issues
Similar questions
What is KB5063878?
When was the update released?
What kind of improvements did this update bring?
Why are there issues with SSDs after installing the update?
Which specific type of SSDs seem to be affected more?
Is data loss a common problem for all users who installed the update?
Are Microsoft and Phison working together on this issue?
How will they address the problem according to the text?
What is DRAM in relation to SSDs mentioned here?
Does this mean that all Phison NAND controller SSDs are at risk?