What does HRESULT 0x80040230 (VFW_E_ENUM_OUT_OF_RANGE) mean?

 
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VFW_E_ENUM_OUT_OF_RANGE

Meaning and numerical form

VFW_E_ENUM_OUT_OF_RANGE is HRESULT 2147746352 (0x80040230; signed -2147220944). AllStat records its meaning as “The list has already been exhausted”. In practical terms, it is returned when a DirectShow enumerator has already reached the end of its available list.

The severity bit in 0x80040230 is set, so this result is a failure result rather than a success or informational status. Its facility is 4 (FACILITY_ITF) and its low 16-bit code is 560 (0x0230). Those fields classify the value but do not identify the component instance, call, object or input that produced it.

Likely causes

  • Possible cause 1 for this HRESULT: caller requests another item after S_FALSE or end-of-sequence.
  • Possible cause 2 for this HRESULT: index-based wrapper advances beyond the snapshot count.
  • Possible cause 3 for this HRESULT: graph mutation invalidates assumptions about enumeration length.

Where the failure belongs

This result belongs to DirectShow filter-graph processing. DirectShow is a legacy, component-based media pipeline. Graph state, pin transport, negotiated media types, allocators, clocks, samples, renderers and source filters contribute separate contracts to the operation. The decisive condition is this: a DirectShow enumerator has already reached the end of its available list. Record the first native producer instead of relying only on a framework exception translated several layers later.

Do not infer from this result alone that reinstalling, rebooting or repeating the whole workflow is appropriate. Because it can cross process and language boundaries, its correction depends on the object identity, lifecycle generation, input and state at the first failing call.

Diagnostic sequence

  1. Capture this result at the first native return and identify the exact object and method.
  2. Confirm that the observed path matches this condition: a DirectShow enumerator has already reached the end of its available list.
  3. compare the live state with the method contract before changing configuration.
  4. collect the code-specific evidence listed above and preserve any more specific preceding error.
  5. change one evidence-backed cause at a time, then repeat the smallest operation that can prove the correction.
  6. Add a regression check that distinguishes it from the related outcomes described below.

Evidence to collect

A useful it record includes the native API or interface method, component or CLSID, process and thread IDs, architecture, apartment where relevant, operation correlation ID, elapsed time, input identity, and the first state-changing event before failure. When diagnosing it, preserve IErrorInfo, an inner HRESULT, Win32 status, device event or provider message when available.

  • Capture 1 for this HRESULT: enumerator method results and fetched count.
  • Capture 2 for this HRESULT: requested index and collection snapshot generation.
  • Capture 3 for this HRESULT: graph changes between enumeration calls.

Telemetry for this HRESULT should retain types, lengths, hashes, stable opaque identifiers and lifecycle generations while redacting content and credentials. This makes repeated incidents comparable without exposing media content, file paths, device identifiers or credentials.

Correction and retry boundary

  • Corrective action 1 for this HRESULT: treat end of enumeration as a normal boundary.
  • Corrective action 2 for this HRESULT: reset or create a new enumerator when another pass is intended.
  • Corrective action 3 for this HRESULT: do not assume collection count remains stable during graph edits.

Retry guidance for this HRESULT. Retry only after Reset, a new enumerator or a known collection change; looping Next at end is a logic error. A retry must avoid this hazard: replay obsolete samples, duplicate graph changes or reuse interfaces from an earlier topology generation. It must also preserve the evidence needed to locate the original producer of it.

Difference from nearby HRESULTs

VFW_E_NOT_FOUND is a failed named lookup, while it is exhaustion of a sequential enumeration. Keep these outcomes separate in logs, exception mappings, user messages, dashboards and automated retry policy.

Practical scenario

A filter-inspection loop ignores the fetched count and calls Next once more; honoring the end condition prevents it. The result scenario narrows the result to a reproducible contract boundary and supplies a concrete before-and-after test.

Developer and operational guidance

Code handling it should log the failed stage before cleanup, keep ownership and lifecycle transitions explicit, and avoid converting every failure into a generic message. Tests for this HRESULT should cover the primary cause, one adjacent HRESULT and the retry boundary so a future change cannot turn a deterministic contract failure into an uncontrolled loop.

Operational repair for this HRESULT should use supported filter installation, device, graph-building and renderer configuration paths. Avoid unsupported configuration edits or component replacement unless evidence identifies that layer. Retain the original trace and a post-fix trace so the result can be attributed and the change reversed.

Official Microsoft references

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