Hello I have been having this issue and cannot switch firewalls. I use Comcast, it pays free for my Norton security, every other day I wake up and Norton's Sonar Activity has removed the cncnet.exe file. So everyday I have to re install, re install maps, re adjust settings, reinstall music, I try to run as admin, im on windows 7, I try to click Allow cncnet.exe in my firewall section for Norton. Please if Anybody has any suggestions on how to make this work, I can not change Internet Security. Thanks