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MF_E_NET_SERVER_UNAVAILABLE
MF_E_NET_SERVER_UNAVAILABLE indicates a temporary server-side unavailability, typically overload or maintenance. It should not be treated as proof that the URL or credentials are invalid.
What to check for MF_E_NET_SERVER_UNAVAILABLE
- Check server capacity, maintenance windows, and upstream dependency health.
- Retry with backoff after confirming that the endpoint is intended to be temporary.
- Use server and proxy logs to distinguish overload from an incorrect route.
Microsoft: Windows Media Server cache proxy functionality
Microsoft: Media Foundation client logging
Diagnostic interpretation
This result has the HRESULT value 0xC00D428E. AllStat records the condition as “The server is currently unable to handle the request due to a temporary overloading or maintenance of the server.%0”.
Evidence to capture
- Capture any IErrorInfo text, activity identifier, event-log entry, and subsystem trace that mentions this result or the mf / net / server / unavailable operation.
- Preserve the first failure in the call chain; a later HRESULT can describe cleanup rather than the original mf / net / server / unavailable condition.
Retry and recovery
%0” has changed.
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