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| NTE_BAD_KEYSET | NTE_PROV_TYPE_ENTRY_BAD |
NTE_PROV_TYPE_NOT_DEF
NTE_PROV_TYPE_NOT_DEF means that the requested legacy CryptoAPI provider type is not registered on the system. The application may be using a provider class that is unavailable, removed, or incorrectly configured on the target machine.
How to resolve it
- Verify the provider type and named provider against the target Windows installation.
- Install or repair the required provider through its supported installer or Windows feature, not by editing provider registry entries manually.
- Keep deployment checks architecture-aware because 32-bit and 64-bit provider availability can differ.
Microsoft: CryptAcquireContext
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