Consider the following scenario in a Microsoft Skype for Business Server 2015 environment:
- You have installed the Skype for Business Server 2015 January 2019, March 2019, or May 2019 cumulative update.
- You have a third-party contact center, or other application that's based on UCMA. It manages conferences and adjusts Audio/Video Conferencing Server audio routes.
In this situation, you find that randomly you experience conferencing audio/video failures, and you may notice the following event log entry recorded on one or more of your Skype for Business 2015 Front End servers:
ID: 32005Level: ErrorSource: LS Audio-Video Conferencing ServerMessage: The Audio/Video Conferencing Server has failed to create a conference.Conference URI: URI;gruu;opaque=app:conf:focus:id:abcdefgh Exception: Media Processor instance is not available to service this request
This issue also occurs in Skype for Business Server 2019.