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STATUS_FWP_INVALID_INTERVAL
The query or policy interval is structurally invalid, not a packet timeout
STATUS_FWP_INVALID_INTERVAL is a WFP validation result for a time interval used by the specific management operation. It is not a statement that network traffic timed out. Templates that enumerate WFP events can carry an interval with a start and end, and those bounds must be meaningful for the structure that accepts them.
Keep the interval owner visible in diagnostics: an event-query interval, a policy lifetime, and an application retry timeout are different domains. Record the raw time values, clock format, and API used, then validate ordering before converting the values for logging or configuration output.
What to inspect
- The API and structure containing the interval, including any event-enumeration template.
- Start and end values in their original representation and units.
- Whether conversion changed time zone, epoch, resolution, or signedness.
- The distinction between invalid interval syntax and an empty interval that returns no records.
References
- Microsoft: WFP error codes
- Microsoft: FWPM_NET_EVENT_ENUM_TEMPLATE0 interval rules
- Microsoft: WFP management functions
- Microsoft WFPSampler source
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