Hi
I am using v7.3 (111) on my MacBook Pro, Sierra 10.12.4 (16E154a) and Norton BLOCKS all traffic to and from the internet.
I removed the entire package using the removal tool provided by Symantec and reinstalled 7.3 (111) - downloaded from the support site.
Result: the SymDaemon runs like mad (easily eats up 90% of my CPU time) and doesn't stop.
Moreover, all internet traffic is being blocked.
I tried to ForceQuit SymDaemon, which sometimes works, but only after a few attempts.
Unfortunately, after every reboot, the same annoying circus starts all over again.
Any solution?