So it seems that with ever new major Windows 10 release Antivirus software gets broken. I had been running McAfee which I was forced to uninstall before upgrading. Intel/McAfee is vague about when a RS3 compatible version will be release, they just state "4th quarter 2017". I've also tried Bitdefender and it seems the firewall is broken under RS3 and blocks all IPV6 traffic and domain connectivity. So other than the built in Windows Defender, is anyone using an Antivirus product successfully with 16299.15?