Microsoft is investigating reports of data corruption and failure issues affecting SSDs and HDDs after installing the August 2025 security update KB5063878. The company is working with storage device partners and collecting user feedback while testing for the root cause. #Windows11 #SecurityUpdate #SSDFailure #HDDFailure
Keypoints
- Microsoft is aware of data corruption issues linked to the August 2025 security update KB5063878.
- The problem affects multiple SSD and HDD models, including brands like SanDisk and Corsair.
- Initial reports indicate failures happen during heavy write operations to drives that are over 60% full.
- NAND controller manufacturer Phison is collaborating with Microsoft to resolve the issue.
- Users are advised to avoid writing large files or extracting many files at once until the problem is fixed.