Microsoft’s recent Windows 11 update, version 24H2 (KB5063878), launched on August 12, 2025, aimed to fix some sign-in delays for new devices. However, it brought some unexpected problems, particularly concerning data storage.
Many users encountered an installation error, code Ox80240069, especially those using Windows Server Update Services (WSUS). Microsoft quickly addressed this issue, but the troubles didn’t end there.
A user known as Nekorusukii reported a more serious issue: the update might cause solid-state drives (SSDs) and hard-disk drives (HDDs) to disappear from the system. In some cases, data became unrecoverable. The problem seems to occur when transferring large files—over 50GB—especially if the drive is more than 60% full. A reboot might temporarily resolve the issue, but it could return with similar file transfers.
Nekorusukii tested 21 different SSDs, including names like Samsung and Western Digital. They suspect that drives with Phison NAND controllers are particularly vulnerable. Only one drive, the WD Blue SA510, remained unrecoverable after the update. Many others reappeared after a reboot.
This situation isn’t unique. In a survey conducted by Tom’s Hardware, other users reported experiencing similar issues with various SSD brands. Among those affected were Corsair Force MP600s and several models using the Phison PS5012-E12 controller.
Phison acknowledged the problem and is working alongside Microsoft to find a solution. They are committed to supporting users and ensuring that any affected products are thoroughly reviewed.
As this situation unfolds, it serves as a reminder to be cautious with updates. Experts frequently advise users to avoid installing updates immediately, especially when new issues are reported widely. Plus, always back up important data. With recent developments highlighting the potential for storage failures, the need for reliable data safety can’t be understated.
Backing up your data is crucial. Following the 3-2-1 backup rule—keeping three copies of your data, on two different types of media, with one copy off-site—can be a strategic way to safeguard against unforeseen issues. Whether you’re storing on external drives or relying on the cloud, having multiple layers of backup ensures that you’re protected.
For more on the SSD issues linked to the Windows 11 update, you can check out this report from Tom’s Hardware.
Stay informed and prioritize your data’s safety.
