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CRYPT_E_NO_VERIFY_USAGE_DLL
No installed or registered function was available to verify the requested certificate subject usage. This affects policy validation rather than the basic ability to parse the certificate.
What to check for CRYPT_E_NO_VERIFY_USAGE_DLL
- Identify the usage or policy check requested by the application.
- Verify that the deployment includes the supported verification component for that certificate type and policy.
- Do not bypass EKU or usage validation without understanding why the verifier is unavailable.
Microsoft: CertVerifyCertificateChainPolicy
Microsoft: CertGetCertificateChain
Diagnostic interpretation of CRYPT_E_NO_VERIFY_USAGE_DLL
CRYPT_E_NO_VERIFY_USAGE_DLL has the HRESULT value 0x80092027. AllStat records the condition as “No DLL or exported function was found to verify subject usage.”. For CRYPT_E_NO_VERIFY_USAGE_DLL, in practice, interpret that wording at the boundary owned by cryptography, certificate, trust, or key-provider processing, rather than treating the value as a generic Windows message.
Evidence to capture for CRYPT_E_NO_VERIFY_USAGE_DLL
- Record the exact COM method or Windows API, its input object, the calling thread, and the full 0x80092027 value before a wrapper converts it to an exception or Boolean result.
- Capture any IErrorInfo text, activity identifier, event-log entry, and subsystem trace that mentions CRYPT_E_NO_VERIFY_USAGE_DLL or the crypt / verify / usage / dll operation.
- For CRYPT_E_NO_VERIFY_USAGE_DLL, compare the failing machine with a working one at the same configuration boundary: component version, policy, registration, identity, and target resource.
Retry and recovery for CRYPT_E_NO_VERIFY_USAGE_DLL
Retry CRYPT_E_NO_VERIFY_USAGE_DLL only when the owning API documents a transient state or after the condition described as “No DLL or exported function was found to verify subject usage.” has changed. For CRYPT_E_NO_VERIFY_USAGE_DLL, configuration, policy, format, and authorization failures normally require correction first; an immediate loop can hide the original call site and add secondary errors.
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