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UTC_E_FILTER_VERSION_MISMATCH
Identify the owning component: filter-language version negotiation
UTC_E_FILTER_VERSION_MISMATCH (0x87C51049) is a Universal Telemetry Client result from the scenario filter parser and evaluator layer. Correlate this HRESULT with the exact request attempt that returned it. The relevant state is filter-language version negotiation: the scenario requests a filter version incompatible with the evaluator available on this client. This identifies a specific UTC/DiagTrack condition, not a general service failure.
What to capture before retrying
| UTC diagnostic field | Value |
|---|---|
| Producing layer | scenario filter parser and evaluator |
| Owning state or object | filter-language version negotiation |
| Evidence to collect | requested/available versions, scenario schema, package build, command set and load events |
| Narrow comparison | export the filter for the target client version and compare normalized expressions |
| Do not confuse with | UTC_E_SCENARIODEF_SCHEMAVERSION_MISMATCH concerns the outer scenario XML schema |
Prove the condition
- Capture requested/available versions, scenario schema, package build, command set and load events. Do this before restarting the service or deleting any working directory.
- Perform this one-variable comparison: export the filter for the target client version and compare normalized expressions.
Nearby result: UTC_E_SCENARIODEF_SCHEMAVERSION_MISMATCH — concerns the outer scenario XML schema.
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.
Confirm the repair
Ship a compatible configuration or feature-gate version-specific commands.
Technical references
- Microsoft Open Specifications: Windows error-code registry — reference for scenario filter parser and evaluator while interpreting it.
- Microsoft: Universal Telemetry Client configuration diagnosis
- Microsoft: Windows Event Log query schema
- Microsoft: Querying Windows Event Log
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