What does NTSTATUS 0xC000A081 (STATUS_LOST_WRITEBEHIND_DATA_NETWORK_SERVER_ERROR) mean?

 
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STATUS_LOST_WRITEBEHIND_DATA_NETWORK_DISCONNECTED STATUS_LOST_WRITEBEHIND_DATA_LOCAL_DISK_ERROR

STATUS_LOST_WRITEBEHIND_DATA_NETWORK_SERVER_ERROR

The remote server rejected or failed delayed write-back

The network connection remained sufficient to return an error, but the server could not persist the buffered data. Possible causes include server-side storage failure, quota or policy changes, share failover, or a remote file-system error.

The server log is authoritative for the underlying failure. A client-only retry can repeat the same problem or create conflicting file versions. Preserve the server response, file identity, and any failover or cluster events.

What to inspect

  • Collect server-side file-system and SMB events at the same timestamp.
  • Check capacity, quotas, share state, and backing-volume health.
  • Validate the resulting file before resuming the application workflow.

References


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