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UTC_E_MULTIPLE_TIME_TRIGGER_ON_SINGLE_STATE
Interpret the result in context: state timer cardinality
The code UTC_E_MULTIPLE_TIME_TRIGGER_ON_SINGLE_STATE (0x87C51033) belongs to scenario state-machine trigger validation, inside the Universal Telemetry Client/DiagTrack workflow for this HRESULT. Start by locating the exact scenario-engine boundary that emitted this Value. It identifies state timer cardinality and reports that a state contains more than one time-trigger definition where the engine permits only one; it does not by itself prove that all Windows diagnostic data collection is unavailable for this HRESULT.
Time, event and forwarded triggers participate in a scenario state machine for this HRESULT. Their type, ownership, source state and transition cardinality are configuration contracts; changing the observed event cannot repair an invalid graph 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.
Build a minimal evidence set
| UTC diagnostic field | Value |
|---|---|
| Producing layer | scenario state-machine trigger validation |
| Owning state or object | state timer cardinality |
| Decisive evidence | state ID, attached triggers, transition targets, durations and configuration merge history |
| Narrow comparison | retain one timer and convert the other condition to a different supported trigger in a test scenario |
| Do not confuse with | UTC_E_TIME_TRIGGER_ONLY_VALID_ON_SINGLE_TRANSITION means one timer was reused across transitions |
The AllStat message names the immediate condition as “Only one Time Trigger is allowed per state” 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.
Run an A/B check
- Associate this result with one request, one scenario version and one service process ID for this HRESULT.
- Save state ID, attached triggers, transition targets, durations and configuration merge history and the first lower-level HRESULT if one exists for this HRESULT.
- Change no policy, provider set or destination except for this test: retain one timer and convert the other condition to a different supported trigger in a test scenario for this HRESULT.
- Compare the produced artifacts and operational events, not only the top-level return Value.
The most informative neighbor is UTC_E_TIME_TRIGGER_ONLY_VALID_ON_SINGLE_TRANSITION. The distinction is concrete: UTC_E_TIME_TRIGGER_ONLY_VALID_ON_SINGLE_TRANSITION means one timer was reused across transitions 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.
Platform-state note
Capture capability and identity state at the moment this result is returned. Session, container, service and destination state can change asynchronously, so a later successful query does not describe the failed generation for this HRESULT.
Safe remediation
Redesign the state graph so one timer owns time-based departure from each state 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 state timer cardinality
- the nearby condition remains distinguishable: UTC_E_TIME_TRIGGER_ONLY_VALID_ON_SINGLE_TRANSITION means one timer was reused across transitions
Technical references
- Microsoft Open Specifications: Windows error-code registry — reference for scenario state-machine trigger validation while interpreting this result.
- Microsoft: Universal Telemetry Client configuration diagnosis — reference for scenario state-machine trigger validation while interpreting it.
- Microsoft: Querying Windows Event Log
- Microsoft: Windows Performance Recorder
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