A new Windows 11 update (24H2 KB5063878) is reportedly causing serious SSD and HDD issues for users worldwide. If you have recently installed this update, your storage drives may be at risk.
🔎 What is the Windows 11 SSD Bug?
After installing update KB5063878 (and in some cases the optional KB5062660), users are experiencing critical drive errors during large file transfers (50GB or more), especially when the storage is already over 60% full.
Common symptoms include:
- Drives completely disappearing from Windows 11,
- Volumes becoming unreadable and showing as RAW,
- In worst cases, irreversible data corruption.
đź’˝ Which SSDs and HDDs are affected?
Initially, the bug was thought to affect only SSDs with Phison controllers, but reports now confirm that multiple brands are also vulnerable, including:
- Western Digital (WD): SN5000, SA510
- Corsair: MP510, MP600
- SK Hynix: Platinum P41
- ADATA: SP580
- SanDisk: Extreme Pro M.2
- Kioxia: Exceria Plus G4
⚠️ This means the bug is not limited to a single manufacturer — many Windows 11 users may be at risk.
đź› What causes the Windows 11 SSD problem?
Experts believe the issue is linked to Windows write caching. During heavy file transfers, the OS may mishandle buffer flushing, leading to I/O queue overloads and failures at the SSD or HDD controller level.
In short: under heavy workloads, Windows 11 can break the communication between the operating system and the storage drive.
⚠️ How to protect your SSD or HDD on Windows 11
Until Microsoft releases an official fix, here’s what you can do:
- Uninstall or delay the update KB5063878.
- Avoid massive file transfers (split them into smaller chunks).
- Back up your data regularly following the 3-2-1 backup rule: 3 copies, 2 storage media, 1 offsite/cloud.
- Monitor official announcements from Microsoft and SSD manufacturers for patches or firmware updates.
đź’ˇ Final Thoughts
This bug is a reminder that Windows updates can sometimes introduce new risks, even while fixing security issues. It also reinforces why data backup strategies are essential for both businesses and personal users.
👉 If you’re running Windows 11 and have installed KB5063878, stay alert, avoid heavy transfers, and back up your files now.
Source : WindowsLatest – Microsoft is investigating Windows 11 KB5063878 SSD data corruption/failure issue
