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STATUS_FWP_CANNOT_PEND
The callout attempted to pend a classify that must complete inline
Some classify paths allow asynchronous pend/complete processing and others do not. This status means the callout attempted to defer a classification that WFP requires to finish synchronously.
Identify the layer and classifyFn path where code attempted to pend the operation. Only specific WFP paths permit pended classification, so move asynchronous work to a supported point in the callout design.
What to inspect
- Check the layer and classify contract before pending.
- Use inline permit/block when pending is not allowed.
- Do not treat this as packet loss; it is a callout contract violation.
References for STATUS_FWP_CANNOT_PEND
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