I find it unlikely that somebody randomly shanks someone a dozen times just because of stress, in a workplace environment.<p>Surely these two gentleman either knew each other and something had happened, OR the attacker knew the victim and there was some sort of issue, romantic or something like that to where he would've been angry enough to try and kill this other man.<p>Of course Microsoft is going to say "Oh, they didn't work with each other or know each other as far as we know, this is just a crazy thing that happened" because they want to be left out of this as much as possible. Which is probably fine. I doubt the MS Teams experience is bad enough to kill over, bad as it may be.