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UTC_E_INVALID_FILTER
Read this as a lifecycle result: scenario eligibility filter
UTC_E_INVALID_FILTER (0x87C51019) is a Universal Telemetry Client result from the scenario filter parser and evaluator layer. Treat this HRESULT as a state-machine report, not as a generic telemetry outage. The relevant state is scenario eligibility filter: the loaded scenario contains a predicate that the evaluator proves can never become true. This identifies a specific UTC/DiagTrack condition, not a general service failure.
UTC filters are typed programs, not plain text searches. Parsing, command validation, name lookup, signature binding and evaluation are distinct phases. Capturing the normalized expression and inferred operand types is essential for a useful diagnosis.
Diagnostic record
| UTC diagnostic field | Value |
|---|---|
| Producing layer | scenario filter parser and evaluator |
| Owning state or object | scenario eligibility filter |
| Evidence to collect | normalized filter tree, constants, variable domains, comparison types and scenario version |
| Narrow comparison | replace the contradictory clause with a known satisfiable predicate and replay the same event |
| Do not confuse with | UTC_E_FILTER_ILLEGAL_EVAL is a runtime type comparison error during evaluation |
Isolate one changing condition
- Capture normalized filter tree, constants, variable domains, comparison types and scenario version. Do this before restarting the service or deleting any working directory.
- Perform this one-variable comparison: replace the contradictory clause with a known satisfiable predicate and replay the same event.
Nearby result: UTC_E_FILTER_ILLEGAL_EVAL — is a runtime type comparison error during evaluation.
Typed-filter note
Save the filter after variable substitution and type inference, not only the authoring XML. A visually plausible expression can still fail because the runtime command table, scope or operand types differ from the authoring tool. Test with one synthetic event whose fields and types are known exactly.
Operational response
Correct the scenario rule; changing ETW buffers or service permissions cannot make a false predicate true.
Technical references
- Microsoft Open Specifications: Windows error-code registry — reference for scenario filter parser and evaluator while interpreting this result.
- Microsoft: Universal Telemetry Client configuration diagnosis — reference for scenario filter parser and evaluator while interpreting it.
- Microsoft: Windows Event Log query schema
- Microsoft: Querying Windows Event Log
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