What does HRESULT 0xC00D0FED (NS_E_WMP_SENDMAILFAILED) mean?

NS_E_WMP_SENDMAILFAILED

NS_E_WMP_SENDMAILFAILED: the failing boundary

NS_E_WMP_SENDMAILFAILED (0xC00D0FED) means Windows Media Player cannot send the link because your e-mail program is not responding. Verify that your e-mail program is configured properly, and then try again. The important boundary is Windows Media Player mail integration; do not replace this result with a broader “Windows Media failed” diagnosis.

What this result proves

This code proves that Windows Media Player could not hand the link to the configured e-mail application. 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 default mail handler, activation result and mapi/shell error; verify the mail client can accept the same handoff independently. 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_WMP_SENDMAILFAILED.

Technical references

• Windows Media Format SDK.
• Microsoft HRESULT registry.