HRESULT 0x8032003F (FWP_E_KEY_DICTATOR_ALREADY

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Description:

A key manager capable of IPsec key dictation is already registered.

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FWP_E_L2_DRIVER_NOT_READY	FWP_E_KEY_DICTATION_INVALID_KEYING_MATERIAL

FWP_E_KEY_DICTATOR_ALREADY_REGISTERED

FWP_E_KEY_DICTATOR_ALREADY_REGISTERED means another key manager with key-dictation capability is already registered. WFP allows only one such authority for the relevant role.

What to investigate for FWP_E_KEY_DICTATOR_ALREADY_REGISTERED

Check for a duplicate driver instance after upgrade, restart, or crash recovery.
Ensure registration is performed once per system role and is paired with reliable deregistration.
Identify any competing IPsec or endpoint-security component before changing configuration.

Microsoft: WFP error codes

Microsoft: WFP architecture

Microsoft: WFP object model

Diagnostic interpretation of FWP_E_KEY_DICTATOR_ALREADY_REGISTERED

FWP_E_KEY_DICTATOR_ALREADY_REGISTERED has the HRESULT value 0x8032003F. AllStat records the condition as “A key manager capable of key dictation is already registered”. For FWP_E_KEY_DICTATOR_ALREADY_REGISTERED, in practice, interpret that wording at the boundary owned by Windows Filtering Platform or IPsec policy state, rather than treating the value as a generic Windows message.

Evidence to capture for FWP_E_KEY_DICTATOR_ALREADY_REGISTERED

Record the exact COM method or Windows API, its input object, the calling thread, and the full 0x8032003F 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 FWP_E_KEY_DICTATOR_ALREADY_REGISTERED or the fwp / key / dictator / already / registered operation.
Reproduce FWP_E_KEY_DICTATOR_ALREADY_REGISTERED with the smallest valid input and note whether the result changes with identity, architecture, service state, or target object.

Retry and recovery for FWP_E_KEY_DICTATOR_ALREADY_REGISTERED

Retry FWP_E_KEY_DICTATOR_ALREADY_REGISTERED only when the owning API documents a transient state or after the condition described as “A key manager capable of key dictation is already registered” has changed. For FWP_E_KEY_DICTATOR_ALREADY_REGISTERED, 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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