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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
This result has the HRESULT value 0xC00D4283. AllStat records the condition as “The network connection has failed.%0”.
Evidence to capture
- Capture any IErrorInfo text, activity identifier, event-log entry, and subsystem trace that mentions this result or the mf / net / connection operation.
- check the documented return contract of the specific API because the same HRESULT can require different recovery in different interfaces.
Retry and recovery
%0” has changed.
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