When this issue occurs, Desktop Sharing, Application Sharing and File transfer sessions that require media relay servers for media traversal fails to establish. Additionally, you receive one of the following error messages on the conversation window:
Note Lync 2013 was upgraded to Skype for Business in April 2015. And Citrix RealTime Optimization Pack 2.0 requires the Skype for Business client.
Article ID: 3159715 - Last Review: Jun 7, 2016 - Revision: 1