What does HRESULT 0x80040E4D (DB_SEC_E_AUTH_FAILED) mean?

 
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DB_SEC_E_AUTH_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 this result is a failure HRESULT. Its facility is 4 (FACILITY_ITF) and its low code is 3661 (0x0E4D). 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 the result

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

Contract boundary

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

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

Evidence to collect

A useful it event records provider CLSID and version, process architecture, interface IID and method, object correlation ID, transaction state and the immediately preceding HRESULT. When recording it 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 it: provider name and authentication mechanism without secret material.
  • Evidence 2 for it: effective account or certificate identity.
  • Evidence 3 for it: native provider error records and server authentication logs.

Corrective actions

  • Action 1 for it: obtain fresh credentials through the intended identity flow.
  • Action 2 for it: verify clock, domain and certificate prerequisites for the mechanism.
  • Action 3 for it: 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 it with the method and object state makes this scenario diagnosable instead of reducing it to “database error”.

Retry and recovery

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

Do not turn it into an unbounded retry loop. Preserve cancellation for it 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 it means identity establishment failed. Telemetry and remediation for it should keep these outcomes distinct.

Developer and operations guidance

Code handling it 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 it, opaque values such as HACCESSOR, HROW, HCHAPTER, DBID components and provider handles must remain scoped to the object that issued them.

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

Official Microsoft references

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