Assume that you are in an online meeting that has the audio and video or instant messaging (IM) enabled in Microsoft Lync 2013 (Microsoft Skype for Business). When someone tries to present content in the meeting, such as the desktop, a program, and so on, you're prompted to accept the content presentation manually.
After installing this update, presenting content in an online meeting will be auto-accepted.
To fix this issue, install the June 7, 2016, update (KB3115033) for Lync 2013 (Skype for Business).
Note Lync 2013 was upgraded to Skype for Business in April 2015.