I know this topic has popped up on other threads, but I have tried everything. Ran the commands in terminal. Uninstalled and reinstalled. Rebooted. But still getting the same message box, and Parallels will not open. But I'm thinking it may have something to do with a new router I just bought, a Netgear Nighthawk. The router does come with its own "armor" firewall, but even after disabling that I am still having problems. Not what I signed up for.