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UTC_E_TRACE_BUFFER_LIMIT_EXCEEDED
Read this as a lifecycle result: ETW trace-profile buffer budget
The code UTC_E_TRACE_BUFFER_LIMIT_EXCEEDED (0x87C51027) belongs to ETW trace-session control, inside the Universal Telemetry Client/DiagTrack workflow for this HRESULT. Treat this HRESULT as a state-machine report, not as a generic telemetry outage for this HRESULT. It identifies ETW trace-profile buffer budget and reports that the profile requests more trace-buffer memory than the client permits or can reserve; it does not by itself prove that all Windows diagnostic data collection is unavailable for this HRESULT.
What distinguishes this value: “The trace profile needs more memory than is available for tracing” Capture evidence for that condition directly so a similar result from the same facility is not confused with this result.
The Universal Telemetry Client controls ETW sessions on behalf of diagnostic scenarios for this HRESULT. ETW sessions have controller-owned names, in-memory buffers, providers, logging modes and lifetimes; a status at this layer should be correlated with the actual session list rather than inferred from the presence of an ETL file 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 |
|---|---|
| Producing layer | ETW trace-session control |
| Owning state or object | ETW trace-profile buffer budget |
| Decisive evidence | buffer size/count, logging mode, provider count, stackwalk settings, system memory and competing sessions |
| Narrow comparison | reduce one buffer or stackwalk parameter at a time and start the same profile |
| Do not confuse with | UTC_E_EXCLUSIVITY_NOT_AVAILABLE is session arbitration rather than memory-budget rejection |
The AllStat message names the immediate condition as “The trace profile needs more memory than is available for tracing” 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 buffer size/count, logging mode, provider count, stackwalk settings, system memory and competing sessions and the first lower-level HRESULT if one exists for this HRESULT.
- Change no policy, provider set or destination except for this test: reduce one buffer or stackwalk parameter at a time and start the same profile for this HRESULT.
- Compare the produced artifacts and operational events, not only the top-level return Value.
The most informative neighbor is UTC_E_EXCLUSIVITY_NOT_AVAILABLE. The distinction is concrete: UTC_E_EXCLUSIVITY_NOT_AVAILABLE is session arbitration rather than memory-budget rejection 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.
Trace-session note
Use an ETW controller view to list session name, GUID, mode, buffers and enabled providers while this result is active. The presence of an ETL file from an earlier run is not proof that the required in-memory session currently exists or is owned by UTC for this HRESULT.
Operational response
Right-size the profile or stop an owning capture; deleting existing ETL files does not reduce in-memory buffers 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 ETW trace-profile buffer budget
- the nearby condition remains distinguishable: UTC_E_EXCLUSIVITY_NOT_AVAILABLE is session arbitration rather than memory-budget rejection
Technical references
- Microsoft Open Specifications: Windows error-code registry — reference for ETW trace-session control while interpreting this result.
- Microsoft: Universal Telemetry Client configuration diagnosis — reference for ETW trace-session control while interpreting it.
- Microsoft: Event Tracing for Windows
- Microsoft: WPR and ETW sessions
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