Symptoms

  • Windows Update or Windows Backup stops with 0x80070057.
  • Formatting a USB drive or partition fails with “the parameter is incorrect.”
  • Copying large files to an external drive throws the same code.

What causes 0x80070057

  • File-system corruption on the target volume.
  • A damaged Windows Update component store.
  • A failing drive or a partition with an invalid allocation-unit size.
  • Regional/decimal-symbol setting other than “.” causing older tools to misparse values.

How to fix it

  1. Run chkdsk with repair on the volume that fails (command below), then reboot.
  2. For update failures, repair the component store with DISM RestoreHealth and run sfc /scannow.
  3. If it happens while formatting, use Disk Management or diskpart to clean the disk and create a fresh partition.

Terminal / CLI command

chkdsk C: /f /r

If the volume is in use, Windows schedules the check for the next restart — type Y and reboot.

How to confirm the fix: The failing operation (update, backup or format) now completes without the code.

Prevent it from coming back

Safely eject external drives, keep firmware current, and replace any disk whose SMART data shows reallocated or pending sectors.