I am fully connected to the internet, yet I had to go through the offline activation. It is no wonder that people use illegal copies like i did for a year until i bought the full version.... you make it harder to use the proper version than the illegal copy!
Get your act together.l
Most people have no such problem with activation.
But some people have mistakenly tried to alter their hosts file to deny connections to adobe.com, and that will prevent activation from reaching Adobe's servers.
And a few have had bad versions of firewall software that needed updates to work correctly,