As early builds are accessible to Release Preview Insiders, Microsoft is taking great strides toward finishing the Windows 11 version 25H2 update. At the same time, the business is addressing growing concerns about reports suggesting recent windows updates might be causing SSD failures. Microsoft and Phison, the maker of SSD controllers, have vehemently refuted any connection between the upgrades and drive malfunctions.
Users began reporting odd storage behavior after applying update KB5063878 (Windows 11 version 24H2), with some SSDs and conventional hard drives, in August 2025. It included, strangely disappearing or showing symptoms of data corruption, particularly throughout demanding write activities involving large files on drives that were more than 60% filled.
Reacting to these problems, Phison conducted extensive validation testing totaling more than 4,500 hours with over 2,200 test cycles, ultimately failing to recreate any of the said issues. The company additionally stated that the circulating document pointing to Phison’s controllers was bogus and unrelated to the results. Microsoft stated officially on its admin portal and through its service alerts following this that its telemetry data did not depict a rise in failure rates of storage devices connected with the August upgrade.
The business also gave guarantees that it discovered ‘no connection’ between the update and the indicated problems with SSDs or HDDs. Notwithstanding these assurances, some users keep voicing worries on social media sites, citing issues while transferring big files or using high drives, even if these assertions remain anecdotal and limited. Microsoft is still releasing Windows 11 version 25H2 among these conversations.
Other noteworthy developments of Windows 11 25H2 cover enhancements to the Windows configuration mechanism, such as the deployment of automated installation of high-quality updates during the first setup (OOBE). It is especially for company and educational devices, along with ongoing efforts to improve Bluetooth audio performance and USB-C alerts. Microsoft is also looking for open-source possibilities for WinUI, the basic user interface framework, by means of phased updates on GitHub.
