What does HRESULT 0xC00D1B84 (NS_E_ARCHIVE_SAME_AS_INPUT) mean?

NS_E_ARCHIVE_SAME_AS_INPUT

NS_E_ARCHIVE_SAME_AS_INPUT: the failing boundary

NS_E_ARCHIVE_SAME_AS_INPUT (0xC00D1B84) means The archive file has the same name as an input file. Change one of the names before continuing. The important boundary is archive path safety; do not replace this result with a broader “Windows Media failed” diagnosis.

What this result proves

This code proves that the archive output resolves to the same file as an input. 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 canonical input and archive paths after expansion; choose a distinct output path so archiving cannot overwrite the source. 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_SAME_AS_INPUT.

Technical references

• Windows Media Format SDK.
• Microsoft HRESULT registry.