Windows & Office Error Code Lookup

Search by error code (like 0x80070005), stop code name (like IRQL_NOT_LESS_OR_EQUAL), Excel formula error (like #REF!), or plain description.

Don't have an exact code yet? See common Windows error messages explained in plain English first.

Illustration of a Windows error code being looked up
All categories Windows Update Blue Screen (BSOD) General System Activation & Licensing App Installer (MSI) Network Disk & File System Excel Word Command Prompt DLL Errors Device Manager Codes
Windows version: All versions Windows 11 Windows 10 Windows 7

5 results

Disk & File System icon

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.

Disk & File System
Disk & File System icon

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.

Disk & File System
Disk & File System icon

0X80071AC3 — The File System Is Corrupted

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

Disk & File System
Disk & File System icon

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.

Disk & File System
Disk & File System icon

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.

Disk & File System
Can't find your exact code? Send it to us along with what you were doing when it appeared — we add new codes regularly.