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UTC_E_FORWARDER_PRODUCER_MISMATCH
Read this as a lifecycle result: forwarder producer contract
When UTC_E_FORWARDER_PRODUCER_MISMATCH (0x87C51012) is returned, the producing layer is trigger-forwarder lifecycle for this HRESULT. Treat this HRESULT as a state-machine report, not as a generic telemetry outage for this HRESULT. The rejected object or state is forwarder producer contract, and the specific boundary is that an update or state request supplied a forwarder object created for a different producer kind for this HRESULT. Later service errors should not replace this first result in the incident record for this HRESULT.
Trigger forwarders connect a producer to scenario trigger processing and have their own registration and enable state for this HRESULT. Reusing a handle after configuration reload or crossing producer types can fail before any scenario filter is evaluated 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.
Diagnostic record
| UTC diagnostic field | Value |
|---|---|
| Owning state or object | forwarder producer contract |
| Producing layer | trigger-forwarder lifecycle |
| Do not confuse with | UTC_E_TRIGGER_MISMATCH compares a trigger instance with an expected trigger type |
| Decisive evidence | expected and actual producer types, forwarder handle origin, registration generation and callback identity |
| Narrow comparison | create a new forwarder from the intended producer and repeat the update with identical trigger data |
The AllStat message names the immediate condition as “Cannot update forwarder: The forwarder passed to the function is of a different 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.
Isolate one changing condition
- Associate this result with one request, one scenario version and one service process ID for this HRESULT.
- Save expected and actual producer types, forwarder handle origin, registration generation and callback identity and the first lower-level HRESULT if one exists for this HRESULT.
- Change no policy, provider set or destination except for this test: create a new forwarder from the intended producer and repeat the update with identical trigger data for this HRESULT.
- Compare the produced artifacts and operational events, not only the top-level return Value.
The most informative neighbor is UTC_E_TRIGGER_MISMATCH. The distinction is concrete: UTC_E_TRIGGER_MISMATCH compares a trigger instance with an expected trigger type 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.
Operational response
Keep producer-specific handles separate and invalidate cached forwarders after configuration 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 forwarder producer contract
- the nearby condition remains distinguishable: UTC_E_TRIGGER_MISMATCH compares a trigger instance with an expected trigger type
Technical references
- Microsoft Open Specifications: Windows error-code registry — reference for trigger-forwarder lifecycle while interpreting this result.
- Microsoft: Universal Telemetry Client configuration diagnosis — reference for trigger-forwarder lifecycle while interpreting this result.
- Microsoft: Event Tracing for Windows — reference for trigger-forwarder lifecycle while interpreting it.
- Microsoft: UniversalTelemetryClient operational-log guidance
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