What does HRESULT 0x80040E41 (DB_E_NOLOCALE) mean?

 
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DB_E_NOLOCALE

Locale ID is not supported

Exact value and interpretation

DB_E_NOLOCALE has the unsigned 32-bit value 2147749441 (0x80040E41) and the signed representation -2147217855. AllStat defines the result as “Locale ID is not supported”. In the concrete failure represented here, an OLE DB operation requests an LCID the provider does not support.

The high bit is set for DB_E_NOLOCALE, so it is a failure HRESULT rather than a success or informational status. Its facility field is 4 (FACILITY_ITF) and its low code is 3649 (0x0E41). Those bit fields place DB_E_NOLOCALE in an interface-defined family, but they do not reveal the provider, object identity, method, rowset generation or command state that produced it.

OLE DB contract boundary

DB_E_NOLOCALE must be interpreted against this contract: OLE DB schema contracts combine DBIDs, provider type metadata, column attributes, constraints and locale rules; current provider metadata is authoritative; cached ordinals or type assumptions can become invalid after a schema or command change.

Start with the table, column, parameter or schema object named by the failing definition or data operation when investigating DB_E_NOLOCALE. Preserve DB_E_NOLOCALE before ADO, ATL, .NET, a database abstraction layer or an application exception replaces it with a generic message; the exact interface and method matter because one OLE DB object can expose several contracts with different preconditions.

Specific conditions that produce this result

  • Cause 1 for DB_E_NOLOCALE: the locale is not installed or recognized by the provider.
  • Cause 2 for DB_E_NOLOCALE: the consumer uses a UI locale for data comparison without checking provider support.
  • Cause 3 for DB_E_NOLOCALE: a persisted LCID is invalid on the current machine or provider version.

Evidence to collect before changing the system

A useful DB_E_NOLOCALE record includes provider CLSID and version, process architecture, interface and method, COM apartment and thread, object correlation ID, transaction state, and the first preceding HRESULT. When DB_E_NOLOCALE involves table names, column values, keys, constraints and provider-specific type declarations, record types, lengths, hashes or redacted identifiers instead of secrets or full business data.

  • Evidence 1 for DB_E_NOLOCALE: the requested LCID and culture name.
  • Evidence 2 for DB_E_NOLOCALE: provider locale capabilities.
  • Evidence 3 for DB_E_NOLOCALE: the property, index or comparison operation using the locale.

Diagnostic sequence

  1. Capture DB_E_NOLOCALE immediately at the native OLE DB return and obtain the current OLE DB error object before another COM call replaces thread error information.
  2. Identify the exact stage for DB_E_NOLOCALE: an OLE DB operation requests an LCID the provider does not support.
  3. For DB_E_NOLOCALE, compare the live command, rowset, accessor or schema state with the metadata and properties actually granted by the provider.
  4. For DB_E_NOLOCALE, inspect per-binding, per-property, per-row or per-record statuses whenever the method supplies them; the aggregate result may not identify the rejected element.
  5. For DB_E_NOLOCALE, reproduce the issue with the smallest command, rowset or definition operation that preserves the same contract boundary.
  6. For DB_E_NOLOCALE, apply one evidence-backed correction, then verify that the operation succeeds and does not merely change into a nearby HRESULT.

Corrective actions

  • Action 1 for DB_E_NOLOCALE: select a locale reported as supported.
  • Action 2 for DB_E_NOLOCALE: define a documented invariant fallback when semantics permit.
  • Action 3 for DB_E_NOLOCALE: avoid silently changing collation-sensitive behavior.

Retry and recovery policy

Retry rule for DB_E_NOLOCALE: retry after choosing a supported locale or changing provider configuration. A safe DB_E_NOLOCALE retry must use a changed input, object generation, provider capability or state transition. If the call returning DB_E_NOLOCALE could have created, updated, deleted or copied data, determine partial completion before replaying it.

For DB_E_NOLOCALE, use bounded retries and preserve cancellation. For DB_E_NOLOCALE, configuration and contract failures should normally fail fast; concurrency, resource or transient state failures may justify retry only after their stated precondition changes.

Practical incident

A sort definition forwards a client-only locale to a server provider that supports a smaller set; negotiating the locale avoids DB_E_NOLOCALE. The diagnostic value comes from retaining DB_E_NOLOCALE together with the failing interface and object state, not from reducing every provider result to “database error”.

Difference from related HRESULT values

DB_E_BADPROPERTYVALUE can reject a malformed locale property value, while DB_E_NOLOCALE means the requested locale itself is unsupported. Keep these outcomes separate in telemetry and user-facing remediation because DB_E_NOLOCALE requires a different next action.

Implementation guidance

Code handling DB_E_NOLOCALE should release OLE DB resources in ownership order, preserve every provider error record, and log granted properties rather than only requested properties. When handling DB_E_NOLOCALE, handles such as HACCESSOR, HROW, HCHAPTER and provider-specific region tokens must never be treated as portable integers across object lifetimes.

When DB_E_NOLOCALE crosses an abstraction boundary, attach a stable correlation ID and structured fields for the native HRESULT, provider source, interface IID, method, object generation and operation phase. For DB_E_NOLOCALE, do not log passwords, access tokens, complete SQL text or unrestricted row values merely to make the event easier to search.

Official Microsoft references

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