Lync 2013 (Skype for Business) call monitor UI flashes constantly

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Lync Server 2013 Skype for Business More...Less

Symptoms

When you background the user interface of a remote call control (RCC) call in Microsoft Lync 2013 (Skype for Business), a call control window that's constantly flashing is displayed. The call control window appears as follows:

A screen shot of call monitor

Resolution

To fix this issue, install the January 12, 2016 update (KB3114502) for Lync 2013 (Skype for Business).

Note Lync 2013 was upgraded to Skype for Business in April 2015.