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STATUS_SMARTCARD_SILENT_CONTEXT
The smart-card context forbids the required prompt
Some callers acquire cryptographic contexts in silent mode, which means the provider must not display UI such as a PIN prompt. If the operation needs the user to authenticate to the card, the provider cannot continue and returns this status.
This is common in services, scheduled tasks, remote sessions, or code paths that unintentionally request silent operation. The key point is UI policy, not certificate chain trust.
What to inspect
- Check whether the caller requested silent provider access or runs in a noninteractive session.
- Verify whether the PIN is cached or must be prompted for the private-key operation.
- Change the caller context or key policy instead of disabling certificate checks.
References
- Microsoft: Smart card certificate requirements and enumeration
- Microsoft: Enabling smart card logon with third-party CAs
- Microsoft Open Specifications: MS-PKCA
- Microsoft Open Specifications: NTSTATUS values
- Microsoft: InitializeSecurityContext with Negotiate
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