Go to "Open Network and Sharing Center" then click "change adapter settings" Afterwards go to your connection left click and go to properties then the sharing tab and uncheck the box that says "Allow other network users to connect through this computer's internet connection". I just tried this maybe an hour or two ago and I havent had an issue logging in or playing since. ( Btw Im not sure if this works on XP). Either way try this out and hopefully it works for you!!!

Good Luck! and
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