ERROR_EAS_NOT_SUPPORTED (282) - Windows Error Code Reference

Technical Meaning

The ERROR_EAS_NOT_SUPPORTED error indicates that the file system being used does not support extended attributes. Extended attributes are additional metadata associated with files and directories, beyond the standard name, size, and timestamps.

Error Details

Extended attributes can be used to store arbitrary key-value pairs for a file or directory, providing a flexible way to add custom information without modifying the file system's structure. This error is typically encountered when an application attempts to manipulate extended attributes on a file system that does not natively support them.

Usage Context

This error can occur in various scenarios where extended attributes are accessed or modified, such as:

Attempting to set or retrieve extended attributes using the SetFileInformationByHandle function with the FileExtendedAttributes information class.
Using commands or APIs that rely on extended attribute support, like icacls or attrib in Windows Command Prompt.

Developer Interpretation

Developers should be aware that not all file systems support extended attributes. Common file systems like FAT32 and exFAT do not support them, while NTFS does. Applications should check the file system type before attempting to use extended attributes to avoid this error.

Related Errors

FAQ

Q: Why does my application encounter this error?

A: The mounted file system does not support extended attributes. Ensure that the target file system supports extended attributes before attempting to use them.

Q: Can I work around this issue?

A: Yes, you can check the file system type and handle operations differently based on whether extended attributes are supported or not.

Summary

The ERROR_EAS_NOT_SUPPORTED error indicates that the file system does not support extended attributes. Developers should ensure compatibility with the target file system before attempting to use these features.