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STATUS_MARKED_TO_DISALLOW_WRITES
The file stream carries a file-system state that blocks writes
This status reports a stream-level prohibition rather than ordinary access-denied ACL processing. The public NTSTATUS description does not define which component applied the mark, so the diagnostic path must begin with the file system, filter stack, and operation that returned it.
Do not clear attributes or security descriptors blindly. Determine whether the stream is part of an integrity, recovery, snapshot, external-backing, or application-managed workflow and whether the mark is temporary or persistent.
What to inspect
- Record the file-system control code and filter stack involved.
- Inspect file attributes, reparse data, external backing, and application state.
- Remove the write prohibition only through the owning component.
References
- Microsoft Open Specifications: NTSTATUS values
- Microsoft: FSCTL_GET_EXTERNAL_BACKING
- Microsoft: ReFS overview
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