HRESULT 0xC0AA0501 (E_IMAPI_DF2TAO_WRITE_NOT_IN

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: the Track-at-Once control request found no active write.

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E_IMAPI_DF2TAO_WRITE_IN_PROGRESS	E_IMAPI_DF2TAO_MEDIA_IS_NOT_PREPARED

E_IMAPI_DF2TAO_WRITE_NOT_IN_PROGRESS

E_IMAPI_DF2TAO_WRITE_NOT_IN_PROGRESS indicates that code attempted an operation which expects an active Track-at-Once write, but no AddAudioTrack operation is currently running. It is the lifecycle counterpart to E_IMAPI_DF2TAO_WRITE_IN_PROGRESS.

Check cancellation and completion races

Timestamp AddAudioTrack entry and return together with cancel requests.
Associate user actions with a track-operation identifier so a late cancel can be ignored after completion.
If the write never started, inspect earlier PrepareMedia, recorder or stream errors.

The inserted media may still be prepared and locked even though no write is active. That is a separate session state, closed through ReleaseMedia. Do not infer from this HRESULT that the media has been released. Diagnose write activity and prepared-session state independently; otherwise cleanup code can either issue duplicate control calls or leak the media lock.

AddAudioTrack · ReleaseMedia · IMAPI return values

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