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FWP_E_INVALID_TUNNEL_ENDPOINT
FWP_E_INVALID_TUNNEL_ENDPOINT means the local or remote endpoint definition for an IPsec tunnel cannot be accepted by WFP.
What to verify for FWP_E_INVALID_TUNNEL_ENDPOINT
- Check that local and remote endpoints use valid, compatible address families.
- Verify that the endpoint values match the tunnel policy mode and are not unspecified, malformed, or reversed.
- Check routing and address availability separately after the policy itself validates.
Microsoft: capture IPsec events with netsh wfp
Microsoft: WFP filtering layer identifiers
Diagnostic interpretation of FWP_E_INVALID_TUNNEL_ENDPOINT
FWP_E_INVALID_TUNNEL_ENDPOINT has the HRESULT value 0x8032003D. AllStat records the condition as “A tunnel endpoint configuration is invalid.”. For FWP_E_INVALID_TUNNEL_ENDPOINT, 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_INVALID_TUNNEL_ENDPOINT
- Record the exact COM method or Windows API, its input object, the calling thread, and the full 0x8032003D 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_INVALID_TUNNEL_ENDPOINT or the fwp / tunnel / endpoint operation.
- Reproduce FWP_E_INVALID_TUNNEL_ENDPOINT 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_INVALID_TUNNEL_ENDPOINT
Retry FWP_E_INVALID_TUNNEL_ENDPOINT only when the owning API documents a transient state or after the condition described as “A tunnel endpoint configuration is invalid.” has changed. For FWP_E_INVALID_TUNNEL_ENDPOINT, 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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