Aether isn't widely known. Maybe you have anti virus software which doesn't know Aether and tries to block its installation. Aether connects to the internet, a bit like your browser or a teleconference application, so that might be being blocked by a firewall, though it does well most of the time. When you launch Aether, it takes a while to sync with the consensus, but after a minute or a few minutes, it is up to date. Check the lghts on it, do they turn green? Did you download a recent version? Keep trying, its worth it! :)