NTSTATUS 0xC000004F (STATUS_EAS_NOT

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: The target file system does not implement extended attributes for this operation.

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STATUS_SECTION_PROTECTION	STATUS_EA_TOO_LARGE

STATUS_EAS_NOT_SUPPORTED

The volume cannot store or process the requested extended attributes

Extended attributes (EAs) are named metadata records carried separately from normal file data and alternate data streams. This result says the request reached a file system that does not expose the EA contract used by native query or set operations. The same path can work on one volume and fail after copying the file to another file-system type.

Do not convert this status into “the attribute is missing.” No EA lookup was possible at all. A portable application should query volume capabilities, keep required metadata in a supported representation, and define what is lost when files cross a boundary that does not preserve EAs.

What to inspect

Record the file-system name and whether the handle is local, redirected, or virtualized.
Distinguish EAs from NTFS alternate data streams and ordinary file attributes.
Avoid repeatedly retrying the same EA request; select a supported metadata mechanism instead.

References

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