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STATUS_FWP_ACTION_INCOMPATIBLE_WITH_SUBLAYER
The filtering layer may be correct while its ordering container rejects the action
STATUS_FWP_ACTION_INCOMPATIBLE_WITH_SUBLAYER means the action cannot be used in the selected sublayer. A sublayer is not just a label: it is part of WFP policy organization and arbitration. The target layer can therefore be valid while the sublayer still makes the requested action unacceptable.
Inspect sublayer ownership and precedence before changing it. Moving a filter to the default sublayer or to an unrelated provider’s sublayer may avoid this validation result while changing which filters win during arbitration. The correct fix must preserve both rule meaning and ownership boundaries.
What to inspect
- The layer GUID and sublayer GUID as separate values.
- The action type and any provider or callout linkage.
- The sublayer owner, documented purpose, and relative weight.
- The effective arbitration behavior expected after a deliberate sublayer change.
References
- Microsoft: WFP error codes
- Microsoft: sublayer management
- Microsoft: FWPM_FILTER0 layer and sublayer fields
- Microsoft: filter weight assignment
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