On August 12, Microsoft deployed the Windows 11 KB5063878 update, which led to alarming reports from some users in Japan claiming that their SSDs experienced issues, allegedly resulting in data loss. In response, Microsoft confirmed to Windows Latest that it is investigating these SSD corruption claims. However, internal tests conducted by Microsoft suggest that the update is not responsible for these failures.
In a recent statement provided to Windows Latest on September 3, 2025, Microsoft emphasized, “After thorough investigation, we have found no connection between the August 2025 update and the types of hard drive failures reported on social media. As always, we continue to monitor feedback post-update and will address any further reports as necessary.” This statement is intriguing, especially considering the increasing number of users reporting issues with their SSDs shortly after the update was released.
There’s a recognition that many users began facing SSD problems starting from August 12, coinciding with the Patch Tuesday security updates. However, whether these issues can be directly linked to the Windows Update remains uncertain. Could external factors have contributed, such as additional updates from hardware partners released around the same time? The answers remain elusive.
Some users recounted their SSDs disappearing after implementing the update, with reports of related complications. One particular tester shared, “I managed to replicate the same error while trying to copy a 151GB file. This resulted in a WHEA hardware error linked to the PCIe controller, prompting a restart. After disabling the sandbox and uninstalling the update, I was able to copy the file successfully without any issues.”
Another user highlighted a less severe but noticeable glitch with their Crucial T710 2TB SSD, narrating their experience: “I attempted to transfer a 151GB file, but it failed and lingered as a ‘ghost’ file on my SSD. I could neither delete nor access it, but after several attempts, I successfully removed it via Safe Boot Minimal.”
Despite these varying accounts, it is essential to note that users need not panic, nor should they rush to uninstall the update based on these isolated incidents.
While the exact cause of these SSD troubles remains a mystery, evidence suggests that only a small fraction of users have experienced issues. Until Microsoft uncovers more precise data through telemetry, the situation continues to be ambiguous.
Investigating the SSD Corruption Controversy Linked to Windows 11 KB5063878
Following the release of Windows 11 KB5063878 on August 12, users reported their SSDs disappearing after updating substantial games such as Cyberpunk 2077 or Honkai: Star Rail. It seems the intense data write from these large game updates exacerbated a potential issue tied to the update.
This heavy data handling allegedly revealed a fault, resulting in some SSDs being detected as “RAW” or disappearing entirely, even from BIOS settings. Testers observed that the problem tends to manifest under specific conditions: notably when the SSD is over 60% full and at least 50GB of data is written in a single operation. When this occurs, File Explorer may freeze, I/O errors may arise, and drives might vanish. Though some managed to recover access by rebooting or partition repair, others were left with no option but a complete wipe.
Critically, it appears that these issues are not linked to a specific brand of SSD, and we are still working to understand how a Windows update could potentially harm storage drives.
Is KB5063878 indeed problematic? Based on various reports, it appears to be a flawed update that fails to meet the quality standards traditionally associated with Patch Tuesday releases.
In addition to the alleged SSD issues, KB5063878 has introduced several other notable problems, including bugs affecting several OBS-based applications post-update.
Our assessments at Windows Latest revealed challenges with secondary.msi installers failing to operate properly, impacting programs such as AutoCAD in academic settings. Additionally, the process of uninstalling the update presents complications; users won’t be able to remove the August patch unless Windows Sandbox is disabled.
Regardless, our testing did not replicate the SSD issues. Based on collected reports, it seems highly probable that the concerns reflect isolated rare conditions, and most users will not encounter SSD failures following a Windows update.
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