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NS_I_MANUAL_PROXY
The practical meaning of this HRESULT
NS_I_MANUAL_PROXY means the legacy Windows Media network client is using explicitly configured proxy settings.
The result comes from the Windows Media client proxy selection stage. A representative case is Windows Media Player reads a configured proxy endpoint and records manual mode before opening the stream.
Read the call sequence as a timeline. First, the application reaches the Windows Media client proxy selection stage. Next, the component evaluates the legacy Windows Media network client is using explicitly configured proxy settings. A wrapper, user interface, or fallback path can report a less specific message afterward.
Data to preserve
- Exact request: method name, all identifiers, units, flags, stream number, requested action, and this result.
- Object state: protocol, proxy host and port, bypass list, user context, authentication method, and effective Internet settings.
- Correlation: callback cookie, object instance, URL or file identity, device identity, and timestamps from the same attempt.
- Underlying cause: the first Win32, COM, network, driver, policy, or component error reported before
0x400D2F04.
A narrow diagnostic run
Use one controlled experiment: compare one request with manual proxy enabled and one using automatic settings while preserving the media URL. A useful comparison for this result changes exactly that variable; changing content, account, proxy, device, components, and version together makes attribution impossible.
| Outcome | Interpretation |
|---|---|
| The same operation now succeeds | The changed precondition was relevant to the failure. |
| A more specific earlier HRESULT appears | Preserve it; this result was probably a wrapper or terminal state. |
| The operation advances and fails later | The condition is fixed even though the complete workflow still has another defect. |
| No behavior changes | Restore the original baseline and test another documented prerequisite instead of stacking workarounds. |
Distinguish the neighboring failures
| Related code | Why it is not interchangeable |
|---|---|
NS_I_EXISTING_PACKETIZER | There is already an existing packetizer plugin for the stream. |
NS_I_RECONNECTED | The client is reconnected. |
NS_E_NO_MULTICAST | Not receiving data from the server. |
The important distinction is this: MF_I_MANUAL_PROXY reports the analogous state in Media Foundation; neither code alone says the proxy is unreachable. Use the symbolic constant and 0x400D2F04 value to distinguish states that share a similar visible message.
Finish with a repeatable fix
Apply the narrow remedy: correct the manual proxy or bypass entry and keep this status separate from later connection failures. Then discard stale media objects, pending callbacks, cached provider sessions, or installer state as appropriate and rerun the exact request that originally returned it.
References
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