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UTC_E_FILTER_INVALID_FUNCTION_PARAMS
Separate cause from final symptom: filter function signature binding
The code UTC_E_FILTER_INVALID_FUNCTION_PARAMS (0x87C51051) belongs to scenario filter parser and evaluator, inside the Universal Telemetry Client/DiagTrack workflow for this HRESULT. The first diagnostic step is to separate configuration, policy and runtime state for this HRESULT. It identifies filter function signature binding and reports that the function exists, but argument count or argument types do not match any accepted signature; it does not by itself prove that all Windows diagnostic data collection is unavailable for this HRESULT.
UTC filters are typed programs, not plain text searches for this HRESULT. Parsing, command validation, name lookup, signature binding and evaluation are distinct phases for this HRESULT. Capturing the normalized expression and inferred operand types is essential for a useful diagnosis for this HRESULT. Record the configuration package or scenario generation together with the Windows build; otherwise a repaired file can be tested against a stale in-memory graph and appear to fail for the same reason for this HRESULT.
High-value observations
| UTC diagnostic field | Value |
|---|---|
| Producing layer | scenario filter parser and evaluator |
| Owning state or object | filter function signature binding |
| Decisive evidence | function name, ordered arguments, inferred types, nullability, filter version and parser location |
| Narrow comparison | call the same function with a minimal known-valid signature, then add arguments one at a time |
| Do not confuse with | UTC_E_FILTER_INVALID_TYPE rejects an unsupported type even before a function signature can bind |
The AllStat message names the immediate condition as “Filter function does not accept the provided parameter types and/or count” for this HRESULT. In practice, the useful extension is to ask whether the request was rejected before any side effect, after partial setup, or during cleanup for this HRESULT. Verify the existence and ownership of the expected output—session, directory, process, result object or emitted event—rather than assuming the message describes the final system state for this HRESULT.
A focused experiment
- Associate this result with one request, one scenario version and one service process ID for this HRESULT.
- Save function name, ordered arguments, inferred types, nullability, filter version and parser location and the first lower-level HRESULT if one exists for this HRESULT.
- Change no policy, provider set or destination except for this test: call the same function with a minimal known-valid signature, then add arguments one at a time for this HRESULT.
- Compare the produced artifacts and operational events, not only the top-level return Value.
The most informative neighbor is UTC_E_FILTER_INVALID_TYPE. The distinction is concrete: UTC_E_FILTER_INVALID_TYPE rejects an unsupported type even before a function signature can bind for this HRESULT. Keeping both symbolic names in logs prevents a broad “DiagTrack error” bucket from hiding whether the failure occurred during parsing, authorization, resource acquisition, execution or teardown for this HRESULT.
Typed-filter note
Save the filter after variable substitution and type inference, not only the authoring XML for this HRESULT. With this result, a visually plausible expression can still fail because the runtime command table, scope or operand types differ from the authoring tool for this HRESULT. Test with one synthetic event whose fields and types are known exactly for this HRESULT.
Recovery criteria
Convert operands explicitly and supply exactly the documented parameter list for this HRESULT. Apply that change only to the owning boundary for this HRESULT. A successful repair must make the controlled case cross this boundary while retaining the intended policy, trace providers, destination and security context for this HRESULT.
Do not treat this result as permission to bypass collection policy, script approval, path restrictions or trace arbitration for this HRESULT. A repair that only weakens those controls is not a valid regression result for this HRESULT.
- the same request now produces its documented success or nonfatal status without a second hidden retry
- the operational log shows one coherent request lifetime and no orphaned action, timer, process or trace session
- teardown followed by a second run does not reuse stale state or recreate filter function signature binding
- the nearby condition remains distinguishable: UTC_E_FILTER_INVALID_TYPE rejects an unsupported type even before a function signature can bind
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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