Edit: After half day, my wife’s Mac started having the same problem. I have then applied the solution that I found in the Apple
My Xbox Live IOS App Released By Microsoft –
Microsoft has just sprung a suprise in releasing a native IOS app which allows you to track all your xbox game achievments. As well as being able to keep an eye on your achievments you also have the ability to change and style your avatar, compare achievements with fellow friends and also recieve the latest game infomation and also latest news from the Xbox Live team.
Head To iTunes Now !