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NS_E_ARCHIVE_FILENAME_NOTSET
NS_E_ARCHIVE_FILENAME_NOTSET: the failing boundary
NS_E_ARCHIVE_FILENAME_NOTSET (0xC00D1B79) means The local archive file name was not set. The important boundary is archive configuration; do not replace this result with a broader “Windows Media failed” diagnosis.
What this result proves
This code proves that archiving was requested without a local archive file name. 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 archive-enable state and resolved output path; set a distinct writable archive filename before starting the encoder. 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_ARCHIVE_FILENAME_NOTSET.
Technical references
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