What does HRESULT 0x80040E4D (DB_SEC_E_AUTH_FAILED) mean?

 
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DB_E_WRITEONLYACCESSOR DB_E_CANCELED

DB_SEC_E_AUTH_FAILED

Authentication failed

Exact value and result class

DB_SEC_E_AUTH_FAILED has unsigned value 2147749453 (0x80040E4D) and signed 32-bit value -2147217843. AllStat describes it as “Authentication failed”. In this result, the provider attempts to authenticate the identity supplied for data-source initialization or connection establishment.

The high bit is set, so DB_SEC_E_AUTH_FAILED is a failure HRESULT. Its facility is 4 (FACILITY_ITF) and its low code is 3661 (0x0E4D). For DB_SEC_E_AUTH_FAILED, these fields identify an interface-defined result family; they do not identify the provider instance, method, object generation or partial effects.

Conditions that specifically lead to this result

  • Cause 1 for DB_SEC_E_AUTH_FAILED: credentials are incorrect, expired or revoked.
  • Cause 2 for DB_SEC_E_AUTH_FAILED: the chosen authentication mechanism is unavailable or rejects the token.
  • Cause 3 for DB_SEC_E_AUTH_FAILED: the account is valid elsewhere but not in the provider security domain.

Contract boundary

For DB_SEC_E_AUTH_FAILED, authentication establishes the identity used by the OLE DB provider; authorization is evaluated later against data-source objects and data. For DB_SEC_E_AUTH_FAILED, connection-string parsing, provider activation and account permission are separate stages and should not be collapsed into one login failure.

Investigation of DB_SEC_E_AUTH_FAILED should start with the data source object, effective credential source and provider authentication exchange. Capture DB_SEC_E_AUTH_FAILED before ADO, ATL, .NET or a database abstraction layer replaces the native HRESULT with a generic exception.

Diagnostic sequence

  1. Capture raw 0x80040E4D and symbolic DB_SEC_E_AUTH_FAILED at the native call boundary.
  2. Identify the exact failing stage for DB_SEC_E_AUTH_FAILED: the provider attempts to authenticate the identity supplied for data-source initialization or connection establishment.
  3. Retrieve all OLE DB error records for DB_SEC_E_AUTH_FAILED before another COM call replaces thread error information.
  4. Compare the live object state and provider-granted capabilities with the input that produced DB_SEC_E_AUTH_FAILED.
  5. Reduce the DB_SEC_E_AUTH_FAILED operation to the smallest case that preserves the same auth contract.
  6. Apply one evidence-backed correction for DB_SEC_E_AUTH_FAILED and verify that the result is not merely replaced by a neighboring HRESULT.

Evidence to collect

A useful DB_SEC_E_AUTH_FAILED event records provider CLSID and version, process architecture, interface IID and method, object correlation ID, transaction state and the immediately preceding HRESULT. When recording DB_SEC_E_AUTH_FAILED data involving passwords, tokens, certificates and account identifiers, use types, lengths, hashes or redacted identifiers rather than secrets or complete business data.

  • Evidence 1 for DB_SEC_E_AUTH_FAILED: provider name and authentication mechanism without secret material.
  • Evidence 2 for DB_SEC_E_AUTH_FAILED: effective account or certificate identity.
  • Evidence 3 for DB_SEC_E_AUTH_FAILED: native provider error records and server authentication logs.

Corrective actions

  • Action 1 for DB_SEC_E_AUTH_FAILED: obtain fresh credentials through the intended identity flow.
  • Action 2 for DB_SEC_E_AUTH_FAILED: verify clock, domain and certificate prerequisites for the mechanism.
  • Action 3 for DB_SEC_E_AUTH_FAILED: separate credential failure from later object-level authorization checks.

Practical scenario

A service keeps an expired access token in a connection pool; refreshing the token before creating a new data source resolves authentication. Keeping DB_SEC_E_AUTH_FAILED with the method and object state makes this scenario diagnosable instead of reducing it to “database error”.

Retry and recovery

Retry rule for DB_SEC_E_AUTH_FAILED: retry only after credentials, token state or authentication infrastructure has changed. A DB_SEC_E_AUTH_FAILED retry is safe only when the relevant input, object generation, capability or external state has changed. Before replaying a modifying call that returned DB_SEC_E_AUTH_FAILED, determine whether rows, schema objects or URL resources were partially created or changed.

Do not turn DB_SEC_E_AUTH_FAILED into an unbounded retry loop. Preserve cancellation for DB_SEC_E_AUTH_FAILED and use a fresh provider object when the failed call may have left local state ambiguous.

Difference from nearby HRESULT values

DB_SEC_E_PERMISSIONDENIED means an authenticated identity lacks permission, while DB_SEC_E_AUTH_FAILED means identity establishment failed. Telemetry and remediation for DB_SEC_E_AUTH_FAILED should keep these outcomes distinct.

Developer and operations guidance

Code handling DB_SEC_E_AUTH_FAILED should release COM objects in ownership order, retain per-row, per-column or per-property statuses, and log granted capabilities rather than only requested options. While handling DB_SEC_E_AUTH_FAILED, opaque values such as HACCESSOR, HROW, HCHAPTER, DBID components and provider handles must remain scoped to the object that issued them.

Operational dashboards for DB_SEC_E_AUTH_FAILED should group by provider version, interface, method and normalized failure stage. A DB_SEC_E_AUTH_FAILED event must not expose passwords, tokens, full connection strings, unrestricted command text or raw row contents.

Official Microsoft references

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