What does HRESULT 0x8004029B (VFW_E_NO_COPP_HW) mean?

 
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VFW_E_NO_COPP_HW

Exact result and bit fields

VFW_E_NO_COPP_HW has the unsigned HRESULT value 2147746459 (0x8004029B) and the signed 32-bit representation -2147220837. AllStat describes it as “The current display device does not support Content Output Protection Protocol (COPP) H/W”. In the operation that produces this result, the current VMR and display device cannot establish a hardware COPP session for protected video output.

The high bit is set, so this value is a failure HRESULT. Its facility field is 4 (FACILITY_ITF) and its low code is 667 (0x029B). These fields classify this result, but they do not identify which filter, thread, device, file or graph generation returned it.

Contract boundary

This result is tied to a legacy rendering or graphics-capability boundary. The result should be diagnosed from the selected renderer, adapter, driver, surface contract and graph topology rather than from the file extension alone.

The practical owner to locate for this HRESULT is the renderer, graphics driver, display connection and negotiated surfaces. When handling this result, capture the native result before a wrapper replaces it with a generic exception, and keep the graph generation or object identity with the record.

Step-by-step diagnosis

  1. Capture it at the first native return, not only at the top-level playback failure.
  2. identify the exact graph stage described here: the current VMR and display device cannot establish a hardware COPP session for protected video output.
  3. compare the live object state, topology and input with the documented interface preconditions.
  4. Before changing filters, drivers, registry data or media for this HRESULT, collect the code-specific evidence below.
  5. Test one evidence-backed the correction on the smallest reproducible graph.
  6. Verify that the corrected run no longer returns it and does not merely replace it with a nearby HRESULT.

Conditions that can produce it

  • Cause 1 for this HRESULT: the graphics driver does not support COPP.
  • Cause 2 for this HRESULT: the VMR is not connected to a display device yet.
  • Cause 3 for this HRESULT: the active output path or adapter does not expose certified protection.

Evidence worth preserving

Log the interface and method, filter CLSID and friendly name, process and thread, graph state, connected pin names, media-type summary, renderer or device identity where relevant, and the first preceding HRESULT. Record lengths and hashes instead of raw content when the incident includes display identifiers, protected-content state, driver details and media paths.

  • Evidence 1 for this HRESULT: IAMCertifiedOutputProtection availability.
  • Evidence 2 for this HRESULT: adapter, connector and driver state.
  • Evidence 3 for this HRESULT: renderer connection state and COPP capability query.

Correction strategy

  • Action 1 for this HRESULT: test support before beginning protected playback.
  • Action 2 for this HRESULT: connect the renderer to the intended display before COPP negotiation.
  • Action 3 for this HRESULT: choose a certified output path or report the protection requirement clearly.

Retry and recovery

Retry rule for this HRESULT: Retry after changing to a COPP-capable connected display path; repeated negotiation on unsupported hardware cannot succeed. A safe it retry must use a changed capability, state, object generation or input. While recovering from it, preserve cancellation and avoid replaying side effects when the original operation may have partially completed.

How it differs from nearby results

VFW_E_COPYPROT_FAILED can describe failure while enabling protection on capable components, whereas it says the required hardware protocol is unavailable. Keep those cases separate in telemetry, UI messages and retry policy because their next actions are different.

Example incident

A protected stream is opened on a basic virtual display adapter that exposes no COPP interface; selecting a certified physical adapter avoids it. This example keeps the diagnosis at the specific the boundary instead of treating every DirectShow failure as a codec reinstall problem.

Implementation notes

Code that handles it should preserve the original HRESULT, the failed stage and an opaque correlation identifier. After it, do not infer success from partial graph construction, and do not continue using interfaces retained from a graph or device generation that has already changed.

Operational remediation for this HRESULT should favor supported component installation, device configuration and documented DirectShow calls. Manual registry or driver changes are appropriate only when the collected evidence for this HRESULT points to that layer and a rollback is available.

Official Microsoft references

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