What does HRESULT 0xC00D428E (MF_E_NET_SERVER_UNAVAILABLE) mean?

 
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MF_E_NET_PROXY_TIMEOUT MF_E_NET_TOO_MUCH_DATA

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.

RFC 9110: HTTP semantics

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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