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FWP_E_ACTION_INCOMPATIBLE_WITH_LAYER
FWP_E_ACTION_INCOMPATIBLE_WITH_LAYER means the action requested by a filter cannot be used at the selected filtering layer. WFP layers represent different points in packet and connection processing, and each has a supported action model.
What to verify
- Choose the layer based on the decision being made: connection authorization, packet inspection, transport, stream, or another documented point.
- Confirm that the action type is supported at that layer before adding the filter.
- Do not move a filter to a nearby layer without checking whether the required fields and semantics still apply.
Microsoft: WFP filtering layer identifiers
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