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ERROR_REMOTE_STORAGE_MEDIA_ERROR
The remote storage service encountered a media error.
ERROR_REMOTE_STORAGE_MEDIA_ERROR is Win32 error 4352 (0x1100) and belongs to Remote Storage media access. The system description identifies the immediate condition but does not identify the caller, object, policy, device, service instance, or transition that produced it.
Interpret this result at the API boundary that returned it. Capture it before logging, cleanup, or another Windows call can replace the thread-local last-error value. Compare the recorded inputs with the documented precondition for Remote Storage media access rather than starting with a broad system repair.
Where the result appears
- This result can surface during recall from tape or other managed media.
- This result can surface during migration or verification of archived files.
- It can surface during legacy hierarchical storage library operations.
- It can surface during restore testing against a Remote Storage backup.
Likely causes
- the required medium is unreadable, damaged, absent, or in the wrong slot.
- the changer, drive, or transport reported an I/O error.
- media metadata does not match the requested migrated file.
- cleaning, positioning, or mount operations failed.
Diagnostic sequence
Diagnosis of it starts with the exact request type: read, write, create, transition, validation, cancellation, or administrative action. Identify the object generation and subsystem owner, then decide whether the failure happened before side effects, during a partial transition, or after completion. This ordering matters in Remote Storage media access because a blind retry can hide stale state or repeat a non-idempotent change.
- record media barcode or identifier, library, drive, and slot.
- record requested file and migration record.
- record device sense data and storage event logs.
- record mount, positioning, and cleaning history.
- record whether another copy of the archived data exists.
Correlate it with the owning component’s operational log, the Windows System log, and any subsystem trace. Telemetry for it should preserve native identifiers such as a path or file ID, handle generation, node or peer identity, policy ID, object version, offset and length, or transaction token. Retain decimal 4352, hexadecimal 0x1100, and the producing API even when a localized message is also shown.
State boundary to prove
The decisive boundary for it is whether the required medium is unreadable, damaged, absent, or in the wrong slot. Prove or disprove that proposition using media barcode or identifier, library, drive, and slot together with requested file and migration record. When observations for it disagree, preserve both and inspect the transition between them instead of choosing the more convenient value.
A focused validation for it should recreate the relevant part of this situation: the service mounts the expected tape but receives persistent read errors at the archived object. A second verified copy becomes the safe recovery source. The negative case should keep the responsible condition unchanged and confirm error 4352; the recovery case should change only that condition and verify a successful result without an unrecorded side effect.
Handling, retry, and recovery
Stop repeated reads that may worsen media damage, preserve device diagnostics, try a healthy drive or verified replica, and recover the affected files before resuming normal migration.
Retry it only after evidence shows a change in Remote Storage media access. Initialization, asynchronous completion, recall, or service readiness can justify bounded backoff; malformed metadata, invalid identifiers, policy rejection, unsupported versions, and integrity failures require correction. Before repeating a write or configuration operation after it, query completion state explicitly.
What to log for support and telemetry
- log decimal 4352, hexadecimal
0x1100, and the producing API. - log the target object and observed Remote Storage media access state.
- log caller identity, process and thread IDs, machine or node identity, and UTC time.
- log attempt number, elapsed time, previous result, and any partial side effect.
- retain the first lower-level or component-specific error before Win32 translation.
Difference from nearby codes
It is narrower than ERROR_REMOTE_STORAGE_NOT_ACTIVE: the service is participating, but its backing medium failed.
Practical example
The service mounts the expected tape but receives persistent read errors at the archived object.
Developer and administrator guidance
Code that handles it should keep its Win32 domain visible across exceptions, RPC responses, and JSON or REST wrappers. Administrators should verify the subsystem evidence before changing policy, deleting state, forcing failover, or replacing storage. Recovery is demonstrated only when a test observes 4352, changes the responsible condition, and confirms that the same operation succeeds without hidden data loss.
References
- Microsoft: System Error Codes (4000–5999) — reference for error 4352.
- Microsoft: Offline Files — reference for error 4352.
- Microsoft: File attributes — reference for error 4352.
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