System Error Code Lookup

Decode the cryptic 0x… number so you can actually fix the problem.

System Error Code Lookup

Look up common Windows and file-system error codes (0x80070057, etc.) — what they mean and how to fix them.

Code (hex like 0x80070057, or decimal)

All codes

Type to filter by code, name, or keyword.

0x80070057 E_INVALIDARG — The parameter is incorrect.

0x80004005 E_FAIL — Unspecified error.

0x80070005 E_ACCESSDENIED — Access is denied.

0x80070002 ERROR_FILE_NOT_FOUND — The system cannot find the file specified.

0x80070003 ERROR_PATH_NOT_FOUND — The system cannot find the path specified.

0x8007000E E_OUTOFMEMORY — Not enough storage is available to complete this operation.

0x80070020 ERROR_SHARING_VIOLATION — The process cannot access the file because it is being used by another process.

0x80070035 ERROR_BAD_NETWORK_PATH — The network path was not found.

0x80070070 ERROR_DISK_FULL — There is not enough space on the disk.

0x8007045D ERROR_IO_DEVICE — The request could not be performed because of an I/O device error.

0x80070570 ERROR_FILE_CORRUPT — The file or directory is corrupted and unreadable.

0x80070017 ERROR_CRC — Data error (cyclic redundancy check).

0x80010108 RPC_E_DISCONNECTED — The object invoked has disconnected from its clients.

0x80040154 REGDB_E_CLASSNOTREG — Class not registered.

0xC00D36C4 MF_E_UNSUPPORTED_FORMAT — This file isn’t playable. The file type is unsupported.

0x8007001F ERROR_GEN_FAILURE — A device attached to the system is not functioning.

0x80004004 E_ABORT — Operation aborted.

0x8007010B ERROR_DIRECTORY — The directory name is invalid.

0x8007007B ERROR_INVALID_NAME — The filename, directory name, or volume label syntax is incorrect.

0x800706BA RPC_S_SERVER_UNAVAILABLE — The RPC server is unavailable.

0x80070021 ERROR_LOCK_VIOLATION — The process cannot access the file because another process has locked a region.

0x8024402C WU_E_SERVICESTORE — Windows Update service store is corrupted.

When to use this

Windows, installers, and apps love to fail with a hexadecimal code and nothing else: 0x80070057,0x80070005, 0x80070570. Those numbers are precise — each maps to a named error with a known cause. This tool turns the code into plain English and a concrete next step, so you stop searching blind.

Worked example

An installer dies with 0x80070020. You look it up: ERROR_SHARING_VIOLATION — “the file is being used by another process.” The fix is to close the program holding the file (often a sync client or viewer), not to reinstall Windows. Or0x8007007B means an illegal character in a path — you rename the folder and the backup job runs.

What’s covered

The table focuses on the file-system and permission errors that come up most in everyday troubleshooting: not-found, access denied, sharing violations, disk-full, I/O and CRC corruption, and a few COM/Update failures. It is a reference, not a diagnostic that scans your machine — enter the code you were given.

FAQ

How do I read the code? Hex codes start with 0x. Many tools also show the signed decimal (e.g., -2147024809); both forms are accepted here.

My exact code isn’t listed. It may be a less common or vendor-specific HRESULT. The name and cause pattern (the high bits) usually still point you in the right direction; search the code with the app’s name for specifics.

Does this tool access my system? No. It is a static reference that runs entirely in your browser.

System Error Code Lookup