SSD failures under Windows: Microsoft and Phison give the all-clear
The Windows update KB5063878 was suspected of causing SSD failures. However, Microsoft and its partners were unable to establish a connection.
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Windows 11 systems should not have an increased risk of failure due to the KB5063878 update. Microsoft and the SSD controller designer Phison wrote this in their final reports on possible SSD failures under Windows 11. Both companies saw no connection between failures and updates.
Rumors of possible problems originated in Japan. According to this, copying processes with files over 50 gigabytes could lead to failures if a data carrier is already at least 60 percent full. In case of doubt, the SSD or HDD disappears from the drive overview.
No connection according to statements
Microsoft shares its own findings on an admin portal for corporate customers: "We have been actively working with our storage device partners to reproduce the issue. At the time of the original release, neither internal testing nor telemetry data indicated an increase in disk failures or file corruption. Microsoft's customer support teams have also not received any reports from customers experiencing this issue."
Phison told US media outlets such as Neowin that it had run 2200 test cycles on numerous SSDs, totaling over 4500 hours. "We have not been able to reproduce the reported issue," it said. "To date, neither partners nor customers have reported that the issue has affected their drives."
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The controller designer Silicon Motion had previously reported that SSDs with its own controllers were not affected. In relation to the spread of Windows, the number of problem reports to date is low. Phison suspects other problems with the affected desktop PCs and notebooks. The company recommends ensuring that the SSD is adequately cooled when copying large files to prevent the controller from overheating.
Both Microsoft and Phison recommend contacting the support of the SSD manufacturer or controller designer in the event of issues.
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