If you disable the proxy, chances are you will lose ALL internet connectivity... There used to be a nice pinned thread on this topic. Here's the basic idea of the thread: If you are trying to play at school, work, or any other public location and are having problems connecting, it's usually due to their security config. Routers, firewalls, and proxies are all tools used by administrators to prevent unwanted network traffic. The admins have purposefully blocked you from playing the game and the only solution would be to ask the admins to give you access through the system. They usually will not comply and therefore there is nothing you can do about it. To sum up: If you are in a public lab/library/etc. you will probably not be able to play. If you can play at your local public computer station, then either a) you are lucky, the admins don't care, or c) the admins are dumb. Regardless of the reason, count your graces because normally you can't play from a public location like that.