Bought Battlefield 4 at cjs-cdkeys last month. I really wanted it on Steam, but unfortunately EA has their own thing called Origin. All games are launched via web and requires a plug in. Tried installing the plugin a few times but ended up with this error every time:

People at forums gave all sorts of strange and bizarre answers as usual, even including turning off Windows Defender like that would be a good idea.. Finally found a tip that actually dealt with the real problem. It seems Chrome did not want to enable it the plugin. Chrome has a local configuration page with this address:

Just had to enable "always allow" and now it works as it should.