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NS_E_WMP_NETWORK_ERROR
Diagnosing NS_E_WMP_NETWORK_ERROR in the Windows Media Player playback path
NS_E_WMP_NETWORK_ERROR (0xC00D11C0) is returned when the Player maps a network-layer failure that lacks a more specific final category.
Trace path or URL resolution, proxy and network selection, parser and codec discovery, graph construction, rendering and optional DRM as separate layers. Here, the decisive boundary is the Player maps a network-layer failure that lacks a more specific final category. This result is most useful when treated as a Player checkpoint, not as a recommendation to reinstall everything.
Playback boundary
AllStat already supplies the standard user-facing description for this HRESULT; this custom block instead isolates the additional technical boundary. Earlier success in file lookup, network connection, parser creation or graph construction does not prove that the later the operation is valid.
Case-specific checkpoint: first socket/protocol HRESULT, URL, DNS, proxy, endpoints, packet trace and server timestamp. The controlled comparison for this HRESULT is: repeat once with logging that captures the earliest WSA or HTTP/WMSP failure before Player mapping.
Closest distinction: NS_E_WINSOCK_ERROR_STRING is a generic Winsock presentation result; preserve whichever lower code occurs first.
Capture the first failing layer
| Capture | Why it matters for this HRESULT |
|---|---|
| Object or resource | first socket/protocol HRESULT, URL, DNS, proxy, endpoints, packet trace and server timestamp |
| State snapshot | Record the Player openState/playState or operation phase, object identity and exact timestamp when this result was returned. |
| First lower result | Keep the earliest Win32, Winsock, COM, parser, codec, DRM or device result that appears before this result. |
| Comparison record | Use one known-good case that follows the same API, protocol and component path while changing only the rejected precondition. |
Controlled playback comparison
- Record
0xC00D11C0, this result, the exact method or command and the first failure time. - Preserve first socket/protocol HRESULT, URL, DNS, proxy, endpoints, packet trace and server timestamp.
- Perform one isolated comparison: repeat once with logging that captures the earliest WSA or HTTP/WMSP failure before Player mapping.
- Repeat the original Player path after it and keep any new HRESULT as a downstream result.
- confirm the expected state transition rather than only disappearance of the dialog.
How to interpret the retest
| Retest outcome | Interpretation |
|---|---|
| Same it on the same object | The governing state or value is unchanged, or the caller is reusing an object created before the relevant change. |
| Fresh object succeeds | Lifetime, cached configuration or stale playlist/graph state contributed to it. |
| A later HRESULT appears | The rejected condition — the Player maps a network-layer failure that lacks a more specific final category — was cleared for this HRESULT; diagnose the new code at its own layer. |
| Only one item or endpoint fails for this HRESULT | The evidence favors resource-specific data, rights, routing or device state rather than a global Player failure. |
Actions that obscure the cause
- treating “restart the Player” as diagnosis.
- Do not discard the first occurrence by repeatedly invoking Play, open, save or retry; later events can replace its original state.
- do not publish credentials, private URLs, license material or complete protected-content headers; retain only redacted identifiers, lengths, hashes and protocol fields.
Technical references
- Supported protocols and file types
- Using Windows Media in DirectShow
- Working with codecs
- DirectShow filters
- Microsoft HRESULT registry
Close it only when the original operation crosses this boundary and reaches the expected next Player state.
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