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MF_E_NET_CONNECTION_FAILURE
MF_E_NET_CONNECTION_FAILURE is a connection-stage failure. It should be correlated with the lower-level socket, TLS, proxy, DNS, or firewall message that preceded it.
What to check for MF_E_NET_CONNECTION_FAILURE
- Test the same endpoint from the affected machine and user or service context.
- Check proxy configuration and whether the required transport is permitted.
- Use client logging to see the protocol and transport selected before the failure.
Microsoft: Networking in Media Foundation
Microsoft: Supported protocols for Media Foundation network sources
Microsoft: Media Foundation client logging
Diagnostic interpretation of MF_E_NET_CONNECTION_FAILURE
MF_E_NET_CONNECTION_FAILURE has the HRESULT value 0xC00D4283. AllStat records the condition as “The network connection has failed.%0”. For MF_E_NET_CONNECTION_FAILURE, in practice, interpret that wording at the boundary owned by Media Foundation or Windows media pipeline state, rather than treating the value as a generic Windows message.
Evidence to capture for MF_E_NET_CONNECTION_FAILURE
- Record the exact COM method or Windows API, its input object, the calling thread, and the full 0xC00D4283 value before a wrapper converts it to an exception or Boolean result.
- Capture any IErrorInfo text, activity identifier, event-log entry, and subsystem trace that mentions MF_E_NET_CONNECTION_FAILURE or the mf / net / connection operation.
- For MF_E_NET_CONNECTION_FAILURE, check the documented return contract of the specific API because the same HRESULT can require different recovery in different interfaces.
Retry and recovery for MF_E_NET_CONNECTION_FAILURE
Retry MF_E_NET_CONNECTION_FAILURE only when the owning API documents a transient state or after the condition described as “The network connection has failed.%0” has changed. For MF_E_NET_CONNECTION_FAILURE, configuration, policy, format, and authorization failures normally require correction first; an immediate loop can hide the original call site and add secondary errors.
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