What does HRESULT 0x80320040 (FWP_E_KEY_DICTATION_INVALID_KEYING_MATERIAL) mean?

 
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FWP_E_KEY_DICTATOR_ALREADY_REGISTERED FWP_E_CONNECTIONS_DISABLED

FWP_E_KEY_DICTATION_INVALID_KEYING_MATERIAL

FWP_E_KEY_DICTATION_INVALID_KEYING_MATERIAL means a key manager attempted to dictate keying material that failed WFP validation.

What to verify for FWP_E_KEY_DICTATION_INVALID_KEYING_MATERIAL

  • Validate key sizes, transform compatibility, lifetime fields, and security-association selectors before passing the data to WFP.
  • Ensure the key material was generated for the exact negotiated policy, not reused from another SA.
  • Collect IKE/IPsec diagnostics while reproducing the problem, but avoid logging secret key material.

Microsoft: WFP error codes

Microsoft: capture IPsec events with netsh wfp

Microsoft: WFP operation

Diagnostic discriminator: Validate key length, selectors, lifetime and negotiated transform against the exact security association. This result concerns dictated key material; do not log the key itself or treat the failure as generic IPsec connectivity.


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