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We suggest you install the latest version of one of these browsers:
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Have you changed your firewall settings to block the 5222 and 5229 ports? Have you set your browser in protected mode? If you have, [here’s](http://forums.adobe.com/thread/1018071?tstart=0) how to troubleshoot it.
There are chances you didn’t [update](http://get.adobe.com/flashplayer/) your flashplayer for a while, so it became unsupported. Sometimes, it can also be an issue with cookies. To check that out, run a game using the private/incognito function. If it works here, the problem lies in cookies and will be solved when they are cleared.