What does HRESULT 0x87C51022 (UTC_E_TRIGGER_MISMATCH) mean?

UTC_E_TRIGGER_MISMATCH

Map the code to the scenario graph: trigger type binding

When UTC_E_TRIGGER_MISMATCH (0x87C51022) is returned, the producing layer is scenario state-machine trigger validation for this HRESULT. A reliable investigation preserves the producing action before any cleanup runs for this HRESULT. The rejected object or state is trigger type binding, and the specific boundary is that a supplied trigger instance is not of the type required by the transition or forwarder for this HRESULT. Later service errors should not replace this first result in the incident record 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.

Data needed for triage

The AllStat message names the immediate condition as “The given trigger does not match the expected trigger type” 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.

Reproduce without collateral changes

1. Export the relevant Microsoft-Windows-UniversalTelemetryClient/Operational events and preserve their ActivityId or request correlation alongside this result.
2. Capture expected/actual trigger type, producer, transition ID, serialized payload and configuration generation for this HRESULT. Do this before restarting the service or deleting any working directory for this HRESULT.
3. Perform this one-variable comparison: construct the trigger through the expected producer while leaving payload values unchanged for this HRESULT.
4. After the comparison, record the next HRESULT and whether the requested session, action, trigger or output object was actually created for this HRESULT.

The most informative neighbor is UTC_E_FORWARDER_PRODUCER_MISMATCH. The distinction is concrete: UTC_E_FORWARDER_PRODUCER_MISMATCH concerns the forwarding object rather than the trigger payload 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.

Fix the contract

Bind each transition to the correct trigger factory and discard cached triggers after reload 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.

Avoid broad registry resets or global service-policy changes until the single-owner comparison has been run for this HRESULT. They can hide the original configuration generation without proving the contract was corrected 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 trigger type binding
• the nearby condition remains distinguishable: UTC_E_FORWARDER_PRODUCER_MISMATCH concerns the forwarding object rather than the trigger payload

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 this result.
• Microsoft: Querying Windows Event Log — reference for scenario state-machine trigger validation while interpreting it.
• Microsoft: Windows Performance Recorder

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