Media file could not be played since the file is missing or is not in the correct format. Calls may be disconnected. Media ...

Media file could not be played since the file is missing or is not in the correct format. Calls may be disconnected.

Media file: %1 culture: %2
Cause: Media file is missing or is not in the correct format.
Resolution:
Verify that the media files for Conferencing Attendant have been installed in the correct folder and use a supported file format.