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NS_E_CCLINK_DOWN
NS_E_CCLINK_DOWN — 0xC00D0023
Diagnosing NS_E_CCLINK_DOWN
NS_E_CCLINK_DOWN identifies this Windows Media Services boundary: two Content Servers failed to communicate.
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
Capture both Content Server identities, peer endpoint and the first inter-server socket or protocol error. Verify communication between the same peers before rebuilding or 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
The useful success criterion is not merely the disappearance of NS_E_CCLINK_DOWN. Confirm that the same server action completes and that the expected content or object remains available through the next pipeline stage.
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