What does HRESULT 0x803A0001 (ERROR_QUERY_STORAGE_ERROR) mean?

ERROR_QUERY_STORAGE_ERROR

Locate the rejected storage invariant: query storage error

ERROR_QUERY_STORAGE_ERROR (0x803A0001) is emitted by the storage path when the storage provider returned a subsystem-specific failure while answering a management query, so the outer HRESULT lacks the lower-level provider detail. The deciding object is Windows Storage Management provider request and returned extended status, so the first investigation belongs there rather than in a generic “disk failure” bucket.

Windows Storage Management providers can return an outer management HRESULT plus a more precise extended error. The extended provider status, target object identity and correlated storage event are the useful evidence when the outer query result is generic.

A useful record contains more than the final UI symptom: retain the first failing call, target identity, topology and state transition before management software rescans the disks.

Evidence to preserve before repair

One-variable reproduction

1. Before changing state, freeze the failing generation and save storage subsystem UniqueId, provider name and version, original CIM/API operation, extended error object, target object IDs and correlated storage events.
2. Exercise this exact comparison: repeat the same query directly against the provider, capture its extended error object, and compare it with a query for a known healthy storage object.
3. During the comparison, keep image bytes, unrelated disks, provider policy and cluster topology fixed.
4. After the test, record the next return value and the durable object state; crossing the boundary should expose a later result rather than silently retrying.

A useful diagnostic fork is ERROR_VOLMGR_STRUCTURE_SIZE_INVALID versus it. This code concerns the storage provider returned a subsystem-specific failure while answering a management query, so the outer HRESULT lacks the lower-level provider detail; the alternate code should remain observable after the fix, proving the application did not suppress the entire subsystem.

Mechanism-specific note

The outer management layer has intentionally collapsed a provider-specific failure. Retrieve the extended error object, provider return code and target UniqueId in the same call context. Without that information, retries and remediation are guesses because hardware, clustering and software providers can all surface this wrapper.

Repair without rewriting unrelated metadata

Retrieve the provider-specific extended error, repair that concrete subsystem condition and rerun the original storage query without suppressing the lower-level status. Apply the change through the supported storage API, then close and reacquire affected objects before retrying.

• The original request now reaches success or a documented later status with the intended layout and access mode.
• A new enumeration reports internally consistent IDs, counts, geometry and ownership for the corrected object.
• The application still distinguishes it from ERROR_VOLMGR_STRUCTURE_SIZE_INVALID and has no unbounded retry loop.

Technical references

• Microsoft: Windows Storage Management API — defines the storage objects used to interpret it.
• Microsoft: MSFT_StorageSubSystem class — primary API or object-model reference.
• Microsoft: Storage Management Provider — use this source to verify storage state and parameters.
• Microsoft: COM error codes for storage — documents the supported management path relevant to this HRESULT.