0X80070780

Disk & File System The File Cannot Be Accessed by the System Applies to: Windows 7, Windows 10, Windows 11

What it means

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

Also seen as: 0x80070780

Quick fix steps

Restart the PC and try again — a locked file from a background process is common and temporary.
Run "chkdsk /f /r" on the affected drive.
Try copying the file to a different location, which sometimes bypasses a localized bad sector.

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

Frequently Asked Questions

Does this mean the file is permanently lost?

Not necessarily — it means Windows currently can't access that specific file, which can stem from a permissions issue, a sync conflict, or temporary corruption rather than the file being gone for good.

Could OneDrive sync be involved in this error?

Yes, potentially — a file mid-sync or with an unresolved sync conflict can sometimes trigger this exact error when you try to access it directly.

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.

0X80071AC3 — The File System Is Corrupted

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

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.