NTSTATUS 299 (STATUS_FILE_LOCKED_WITH

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: The file has writer byte-range locks.

Could be also:
Constant	Type	OS
ERROR_PARTIAL_COPY	Win32 error	Windows
FAULTY_HARDWARE_CORRUPTED_PAGE	BugCheck Code	Windows

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STATUS_FILE_LOCKED_WITH_ONLY_READERS	STATUS_VALID_IMAGE_HASH

STATUS_FILE_LOCKED_WITH_WRITERS

The file is locked with writer participation

This status reports that the file lock state includes at least one writer. Operations that need conflicting access to the locked byte range may have to wait, fail, or be retried according to the caller policy.

It is not the same as an oplock and not the same as a deny-write share mode. The range and lock owner matter more than the file name alone.

What to inspect

Capture byte ranges, owner handles and whether the caller requested shared or exclusive locking.
Avoid treating the entire file as unavailable unless the locked range covers the operation.
Check for leaked locks when a process exits unexpectedly or handles are duplicated.

References

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