Microsoft investigated reports of a Windows 11 update causing SSDs to become unrecognizable during large file transfers but found no users to substantiate these claims. Phison conducted over 4,500 hours and more than 2,200 test cycles on the affected drives and found no evidence of the reported issue. Phison suggested that user-side factors, such as heat during large transfers, could be responsible for the concerns, indicating that neither Phison nor Microsoft is at fault.