Servicing (CBS)
0x80070570
The file or directory is corrupted and unreadable.
Failure
What it means
Microsoft lists this under component store corruption for Windows Update. When it appears outside servicing, during a file copy or an install from media, treat it as a storage problem instead.
Real causes
- Component store corruption during a servicing operation.
- Bad sectors or a failing disk, when the error appears during file copies.
- A corrupted download or damaged installation media.
What to do
- For update failures:
Dism.exe /Online /Cleanup-Image /RestoreHealth, then Sfc.exe /Scannow, then restart. - For file copy failures: run chkdsk on the volume and check the disk health before assuming servicing is at fault.
- If it appears while installing from media, verify the media hash and try a different source.
Where to look
%windir%\Logs\CBS\CBS.log- System event log for disk warnings
Checked against Microsoft documentation. Last reviewed 2026-08-20.
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