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| FWP_E_EM_NOT_SUPPORTED | FWP_E_PROVIDER_CONTEXT_MISMATCH |
FWP_E_NEVER_MATCH
FWP_E_NEVER_MATCH means the conditions in an enumeration template or subscription are mutually incompatible, so no WFP object can satisfy them.
What to inspect for FWP_E_NEVER_MATCH
- Look for conflicting conditions on the same field, incompatible object types, or a constraint that excludes all values.
- Test each condition independently, then combine them incrementally.
- Treat this as a query-design error rather than evidence that the engine is missing policy objects.
Diagnostic discriminator: Evaluate the enumeration or subscription conditions together. If individual conditions work but the combined template excludes every object, the defect is the query design, not absence of WFP policy state.
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