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NTE_SIGNATURE_FILE_BAD
NTE_SIGNATURE_FILE_BAD means that the digital signature file associated with a cryptographic provider is corrupt or invalid. Treat this as an integrity and deployment issue, because the provider cannot be trusted to load in its expected signed state.
Safe response
- Do not bypass signature validation or replace provider files from an unverified source.
- Verify the provider package, Windows component integrity, and code-signing status using supported administrative tools.
- Repair or reinstall the provider from a trusted source, then repeat the operation with a newly acquired context.
Microsoft: CryptAcquireContext · Microsoft: security and setup HRESULT values
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