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| ERROR_BIZRULES_NOT_ENABLED | NS_E_CANNOTCONNECT |
NS_E_NOCONNECTION
NS_E_NOCONNECTION: the failing boundary
NS_E_NOCONNECTION (0xC00D0005) means There is no connection established with the Windows Media server. The operation failed. The important boundary is missing server connection; do not replace this result with a broader “Windows Media failed” diagnosis.
What this result proves
This code proves that the operation required a Windows Media server connection that did not exist. It does not, by itself, prove a codec, permissions, network, device, or media problem outside that boundary. Preserve the first lower-level result when one exists, because later Player or Encoder errors can hide the original cause.
Evidence and focused verification
Record the server object/session state immediately before the call and prove that connection establishment completed before repeating the operation. Keep the media object, endpoint, profile, or device identity fixed while changing only that rejected precondition. A successful retest should pass this exact boundary; a different HRESULT from a later stage is new evidence, not recurrence of NS_E_NOCONNECTION.
Technical references
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