Microsoft had a bad a today as Xbox Live core service went down making thousands of Xbox Live users who tried to play online only Titanfall game were disappointed. Microsoft quickly acknowledged the issue and started fixing it. Microsoft has now announced that Xbox Live service is now up and running. Just reboot your Xbox One console and start enjoying your online games. Xbox Live Core Services: Were you experiencing issues signing in to Xbox Live? We are very happy to say that our team has fixed the problem and the Live service is ready and waiting. If you are experiencing any lingering issues, try a cold reboot of your Xbox by powering down, unplugging, waiting 10 seconds, plugging back in and powering back on. Thanks for all your patience while our team was working. Have fun! Source: Xbox
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