Not sure if anyone of you have encountered this weird behaviour with Skype for Business client. A few of our users reported that when they are about to answer/respond to an Instant Message in Skype for Business, the SFB places/initiated a call to the other party automatically. Previously, I advised them to reboot the computer and it did helped but recently some of them said that even after rebooting the problem persist. For those who have experienced this same problem, please share with us your solution. Thank you.