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NTE_INVALID_PARAMETER
The important part of NTE_INVALID_PARAMETER is its scope: cryptographic call contract. At least one argument violates the provider API contract, even if the pointer itself is readable and the algorithm or key otherwise exists. Keep the hexadecimal value 0x80090027 with the returning API, because higher-level software may translate it into a message that loses this distinction.
Where the status is selected
The provider has been reached, but the request does not satisfy the contract for selecting a container, setting a property, or passing an operation-specific structure., treat names, scope flags, key specifications, structure sizes, nullability, and creation state as one transaction rather than debugging only the most visible argument.
Evidence that changes the diagnosis
- 1. All flags and structure sizes at the returning API boundary
Log flags, padding structures, property names, buffer lengths, and nullability exactly as supplied. - 2. Provider, container or key name, user-versus-machine scope, and create-versus-open intent
Validate structure sizes and initialization, especially cbSize fields and algorithm-specific padding data. - 3. The same call captured from a successful request against the same provider
Compare the call against the documented two-pass sizing and input/output aliasing rules.
For cryptographic call contract, these observations are deliberately nonsecret: identifiers, lengths, provider names, policy selections, and state transitions usually support comparison without recording private keys, passwords, PINs, or plaintext.
What to include in an escalation package
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, build a minimal call with explicit provider selection and a fresh nonproduction object. Add one flag or property at a time until the status returns in a cryptographic call contract investigation. This identifies whether the failure belongs to selection, object state, or one optional parameter without destroying the original keyset.
- 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 cryptographic call contract 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 cryptographic call contract path instead of judging only by the final application message.
Nearby results and misleading fixes
NTE_BAD_KEYSET_PARAM is limited to keyset selection. This result can arise from any invalid argument in the cryptographic operation. Creating a new key under a different account can make the symptom disappear while changing provider, scope, ACL, and object identity simultaneously. That is a workaround, not a diagnosis of the original contract.
For cryptographic call contract, 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
The original object must be opened or configured with the documented parameter set under the intended scope, with no silent fallback to another provider or newly created container. 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 cryptographic call contract interface, protocol, or data format.
- Microsoft Open Specifications: HRESULT values.
- Microsoft: CryptAcquireContext.
- Microsoft: CNG Key Storage Providers.
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