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NS_E_NO_MEDIA_PROTOCOL
NS_E_NO_MEDIA_PROTOCOL — 0xC00D019B
Diagnosing NS_E_NO_MEDIA_PROTOCOL
NS_E_NO_MEDIA_PROTOCOL identifies this Windows Media Services boundary: The Content Server cannot communicate using the Media System Network Protocol; record the server identity and endpoint.
Why this boundary matters
This HRESULT belongs to a specific network or control-path stage. Keep the resolved endpoint and selected protocol fixed, and preserve the first socket/protocol result so DNS, connection, negotiation, response parsing and media delivery are not collapsed into one generic network failure.
Evidence to collect
| Field | What to preserve |
|---|---|
| Peer | Resolved server/peer endpoint and the protocol actually selected for the request. |
| Stage | Last completed stage: resolution, connection, control exchange, response parsing or media delivery. |
| Transport result | First socket/protocol status, timeout/reset indication, and byte counts when data transfer started. |
| Intermediaries | Proxy, gateway or second Content Server involved in the same path, including its identity. |
Decision rule
Keep endpoint and protocol fixed while changing one network precondition; a later socket or parser result is a new boundary and should be diagnosed separately.
Focused test
Record both Content Server identities, selected media-system protocol and endpoint; verify that the same peers have a mutually usable transport before moving content.
Verification
Repeat the same request to the same endpoint with the same selected protocol. Confirm it passes the previously failing network stage; if it advances and fails later, diagnose the later socket/protocol result separately.
Technical references
- Windows Media Services 9 Series SDK
- Windows Media Services HRESULT values
- Replicating a Windows Media server
- Microsoft HRESULT values for the Windows Media namespace
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