I have this issue too. And today, it's begun disconnecting my internet as well. Twice today. The Kaspersky Internet application freezes up and is non responsive. The rest of the computer works, and says the internet connection is working, but the Chrome browser does not connect. I have to reboot the computer just to get back on-line. I use my computer for work, and don't have time for this crap. And I don't only have a chromecast, but a google home and a google mini also. I'm not giving them up because my security software can't cope. That's beyond unacceptable. Since no solution seems forthcoming, I'm having to create one of my own, which is uninstalling Kaspersky Internet Security, and replacing it with a 30 day trial of BitDefender, on my two primary computers, just so I can function. If this isn't solved soon, I'll be moving the rest of my 8 computers and devices over to something else as well.