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UTC_E_SCENARIO_THROTTLED
Identify the owning component: scenario-load throttle gate
The code UTC_E_SCENARIO_THROTTLED (0x87C5103B) belongs to DiagTrack scenario-definition processing, inside the Universal Telemetry Client/DiagTrack workflow for this HRESULT. This result becomes useful only after it is tied to one request generation for this HRESULT. It identifies scenario-load throttle gate and reports that a trigger associated with the scenario is currently throttled, so UTC blocks loading the scenario; it does not by itself prove that all Windows diagnostic data collection is unavailable for this HRESULT.
DiagTrack scenarios are configuration-driven state machines. A scenario definition, its diagnostic rules, referenced profiles, triggers and action graph must all come from a compatible configuration generation for this HRESULT. Mixing authoring files or package versions can make an otherwise valid identifier unusable 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.
What to capture before retrying
| UTC diagnostic field | Value |
|---|---|
| Producing layer | DiagTrack scenario-definition processing |
| Owning state or object | scenario-load throttle gate |
| Decisive evidence | scenario and trigger IDs, throttle state/window, producer rate, prior firings and configuration version |
| Narrow comparison | wait for reset or use a fresh controlled trigger instance and attempt the load once |
| Do not confuse with | UTC_E_THROTTLED reports suppression of an individual event after the scenario is loaded |
The AllStat message names the immediate condition as “A trigger in this scenario is throttled, blocking the scenario from being loaded” 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.
Prove the boundary
- Freeze the failing scenario package, caller inputs and UTC service lifetime that produced this result.
- Collect the high-value state: scenario and trigger IDs, throttle state/window, producer rate, prior firings and configuration version for this HRESULT.
- Use a passing control on the same Windows build, then wait for reset or use a fresh controlled trigger instance and attempt the load once for this HRESULT.
- Repeat once after normal teardown to prove the result is not caused by a stale handle or leftover run state for this HRESULT.
The most informative neighbor is UTC_E_THROTTLED. The distinction is concrete: UTC_E_THROTTLED reports suppression of an individual event after the scenario is loaded 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.
Configuration-generation check
Hash the scenario, rules and referenced profile files used for this HRESULT, and record the UTC process start time. If files changed after the process loaded them, restart only after preserving the prior generation so the comparison remains auditable for this HRESULT.
Confirm the repair
Correct trigger frequency or throttle configuration before repeatedly reloading the scenario 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 scenario-load throttle gate
- the nearby condition remains distinguishable: UTC_E_THROTTLED reports suppression of an individual event after the scenario is loaded
Technical references
- Microsoft Open Specifications: Windows error-code registry — reference for DiagTrack scenario-definition processing while interpreting this result.
- Microsoft: Universal Telemetry Client configuration diagnosis — reference for DiagTrack scenario-definition processing while interpreting it.
- Microsoft: UniversalTelemetryClient operational-log guidance
- Microsoft: Windows Event Log query schema
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