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NTE_AUTHENTICATION_IGNORED
NTE_AUTHENTICATION_IGNORED identifies a failure in dictionary-attack mitigation. A protected provider has entered a lockout or throttling state and deliberately ignores the supplied authorization rather than evaluating another password or PIN attempt. Diagnose dictionary-attack mitigation at the first component that returned the value, not the last user-interface layer that displayed it; later cleanup and fallback attempts can produce different secondary errors.
Where the status is selected
Protected providers can distinguish a wrong secret, an expired secret that must be changed, and a mitigation state in which new attempts are ignored., preserve attempt timing and provider state; otherwise all three can be flattened into a generic PIN or password failure by the application.
Evidence that changes the diagnosis
- Provider and device identity, credential type, attempt count, lockout or throttling state, and timestamps
Stop automatic retries and record the provider lockout state, retry counter, and recovery policy.
In the path, distinguishes rejection, expiry, and ignored attempts. - Whether the secret was rejected, accepted but expired, or not evaluated
Determine whether the authorization came from a user prompt, cached secret, remote service, or stale configuration.
Prevents retry automation from worsening lockout or throttling. - The supported password-change or unblock workflow for the specific provider
Follow the token or TPM recovery procedure; do not cycle guessed credentials through the provider.
Connects recovery to the provider-supported credential workflow.
Build a timeline before changing state
Correlate the last successful operation with provider installation or update, key creation or renewal, profile or session changes, device insertion and removal, policy refresh, and the first failing call. The order matters: a provider error that starts immediately after a key migration suggests a different boundary from one that appears only after a service account changes.
- a minimal reproducer that names the API, provider, key or container, flags, and nonsecret input sizes.
- In the path, provider, device, profile, and operating-system event records covering the last success and first failure.
- In the path, a known-good control result produced under the same identity, architecture, and provider selection.
A controlled way to reproduce it
In the path, stop automated retries. After the provider-defined cooldown or administrative recovery, make one labeled attempt with a known valid test credential on a nonproduction object in a dictionary-attack mitigation investigation. For expiry, use the supported change workflow rather than repeatedly presenting the old value.
- Preserve the original input, identity, provider or protocol selection, and first return Value.
- Use one known-good control that changes only the suspected part of the dictionary-attack mitigation path.
- reverse the comparison with known-good input on the failing layer where that can be done safely.
- Record where behavior first diverges in the dictionary-attack mitigation path instead of judging only by the final application message.
Nearby results and misleading fixes
NTE_INCORRECT_PASSWORD describes a credential rejected normally. This result indicates mitigation has changed how attempts are processed. Do not infer that credentials are wrong when the provider says they were ignored, and do not clear the state by resetting the token before recording lockout evidence in a dictionary-attack mitigation investigation.
For dictionary-attack mitigation, also retain the original numeric value; neighboring constants can encode materially different remediation paths even when an application presents all of them as an authentication, certificate, or security failure.
What counts as a real resolution
In the path, the provider must evaluate the credential normally, enforce its retry policy, and complete the protected operation after any required change or recovery procedure. Keep a regression case that uses nonsecret identifiers and expected outcomes, including one negative control that must continue to fail.
Technical references
These sources define the HRESULT and the relevant dictionary-attack mitigation interface, protocol, or data format.
- Microsoft Open Specifications: HRESULT values.
- Microsoft: CNG Key Storage Providers.
- Microsoft: CNG key storage functions.
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