Avast is pretty cool. If you really like Avast: right click the Avast icon on the bottom right, highlight shield control, then select disable for 10 minuets, sign on to Horizon, and Re-Enable Avast.
Thank you i had the same problem all i had to do is disable my avast and i have no problems now, at first i thought i just was getting screwed over HORIZON IS AWSOME!!
I have the same problem, my anti-virus is NOD32 and my firewall is look’n’stop. The strange thing is i have to uninstall and reinstall to have it to work, each time i want to use. I am diamond member and i would like to solve this issue. Someone can help please?