0X80071AC3

Disk & File System The File System Is Corrupted Applies to: Windows 7, Windows 10, Windows 11

What it means

A more explicit version of file system corruption, often seen on external or removable drives.

Also seen as: 0x80071AC3

Quick fix steps

Run "chkdsk /f /r" on the affected drive.
Back up any accessible files immediately before further troubleshooting.
If corruption recurs on the same external drive, consider reformatting it after backing up its contents.

For the full step-by-step walkthrough, see "Disk Error" or "Windows Detected a Hard Disk Problem".

Frequently Asked Questions

Does this mean my drive has bad sectors?

It can, but it more specifically indicates the file system itself is in a state Windows considers unsafe to write to right now — running chkdsk addresses this directly.

Can I keep using the drive normally while this persists?

It's better to run chkdsk to resolve the underlying issue first — continuing to write to a drive in this state risks further file system problems.

Other error codes

0X80070570 — The File or Directory Is Corrupted and Unreadable

Windows found file system corruption — could be the drive itself, a bad copy operation, or a failing disk.

0X8007002C — Unspecified Error During Copy/Install

Often appears during large file copies or installs and points to file system errors or a flaky connection to an external/network drive.

0X80070017 — The Cyclic Redundancy Check Failed

Data on the disk is corrupted and failed an integrity check — often points to physical drive damage or a bad copy/burn.

0X80070780 — The File Cannot Be Accessed by the System

A specific file is locked, corrupted, or the drive has a developing hardware issue preventing access.