A tricky situation has emerged for some Windows 11 users. Recent updates, specifically ‘KB5063878’ and ‘KB5062660’, were supposed to bring improvements. They aimed to fix bugs, boost gaming performance, and tighten security. Instead, they’re causing a big headache: some solid-state drives (SSDs) are failing when users try to move large amounts of data.
This problem seems to hit hardest with SSDs that use Phison controller chips. Users report drives stopping completely. This happens when transferring more than 50 GB of files, especially if the drive is already over 60% full. Even updating big games like Cyberpunk 2077 can trigger it. If a user reboots their computer after such an event, the drive’s partitions might become corrupted. The operating system can then no longer access the drive. This forces users to either completely reformat their SSD or replace it entirely.
The issue isn’t just affecting individual users. Organizations that manage computers using tools like WSUS or SCCM are also running into trouble. They are seeing an error code, 0x80240069, which stops updates from installing on managed devices. Several SSD models are particularly at risk. These include the Corsair Force MP600, along with other drives that use the Phison PS5012-E12 controller. The Kioxia Exceria Plus G4, Fikwot FN955, Western Digital SA510 2TB, and SanDisk Extreme Pro M.2 NVMe 3 are also on the list.
Evidence of these problems is piling up. A Japanese user named Nekorusukii shared test results showing affected SSDs on his own system. In a separate report, the Japanese media outlet NichePCGamer pointed out that at least eight users on X (formerly Twitter) have faced similar issues with their SSDs.
For now, the safest bet is to avoid continuous, heavy data writing if you have installed the ‘KB5063878’ and ‘KB5062660’ updates. This means holding off on tasks like huge data backups, moving large folders, or any process that involves constant writing to the drive. You should wait until Microsoft releases a fix. If you absolutely need to back up data, do it in small batches, not one continuous large transfer. If you can’t avoid these updates, you might consider uninstalling them immediately.
Phison Speaks Out to Toms Hardware
“We are working diligently. We understand the possible disruption. We immediately contacted industry partners (various SSD brands) for testing and to develop new firmware for all affected SSD manufacturers using our chips. This will then be released to users.”
