| Previous | Next |
| NTE_AUTHENTICATION_IGNORED | NTE_INCORRECT_PASSWORD |
NTE_VALIDATION_FAILED
NTE_VALIDATION_FAILED should be read at the integrity or signature validation boundary. A provider completed the relevant parsing or computation but the supplied integrity value, signature, authentication tag, or protected structure did not validate. The useful diagnostic question is which concrete object and operation caused Windows to select this exact HRESULT—not whether a key, certificate, account, file, or device merely “works.”
Read the failure at the correct layer
The failure occurs after a cryptographic operation has enough context to process key material and data in an integrity or signature validation investigation. Preserve the exact algorithm, mode, padding, key version, nonce or IV, authentication tag, associated data, input bytes, and output contract. A high-level “encrypt” or “verify” label is not sufficient to reproduce the operation.
Build an incident record
| Record | Why it matters for this code |
|---|---|
| Algorithm and provider identifiers plus key identity and usage policy | Makes the cryptographic operation reproducible without logging secrets. |
| Ciphertext or message bytes, mode, padding, IV or nonce, tag, and associated-data boundaries | Separates malformed or mismatched data from provider execution. |
| The first provider return before a wrapper translates it into a general security exception | Preserves the lower-level result that wrappers often hide. |
Code-specific checks:
- Capture algorithm identifiers, key identifiers, signature/tag lengths, and the exact bytes covered by validation.
- Check canonicalization and serialization boundaries before blaming the certificate or public key.
- Verify with an independent implementation and a known test vector where the format permits it.
Correlate the failure with state changes
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.
Use two comparison axes
Use a published or internally fixed known-answer vector with the same primitive, then process the production input with a known-good key and provider where policy permits in this condition investigation. The two directions separate an implementation or parameter problem from damaged or mismatched data.
| Test | Interpretation |
|---|---|
| Same input, known-good path | Success moves attention toward the selected provider, policy, device, context, or transaction state. |
| Known-good input, failing path | Failure suggests that the environment or selected object is independently unable to perform the operation. |
| Original path after one isolated change | This comparison demonstrates whether the proposed correction addresses the original condition. |
Do not collapse it into a neighboring code
This is distinct from a malformed-input status: the data may be structurally parseable yet fail its integrity check., repeatedly trying alternate passwords, padding modes, or keys against protected data can trigger lockout and also obscures which parameter set produced each result. Label every controlled attempt in this condition investigation.
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.
Verification after the change
In the path, verification must succeed for the intended key and protocol parameters, and a deliberately altered input must still fail. That positive-and-negative pair proves more than one successful retry in this condition investigation. 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 relevant interface, protocol, or data format.
- Microsoft Open Specifications: HRESULT values.
- Microsoft: NCryptEncrypt.
- NIST SP 800-38D: GCM and GMAC.
Looking for a different code? Search another status or error code.