At the time of writing, Xbox Live has been down since mid-morning. The outage is affecting users globally, including here in Australia, with 'Core Service' capabilities failing. Per the update on Xbox's website: Our engineers and developers are actively continuing to work to resolve the issue causing some members to have problems signing in to Xbox Live. Stay tuned, and thanks for your patience. We will bring you updates as they become available otherwise, you can check the status here or here. UPDATE: Xbox has identified the particular error affecting users and insists they are on the case. https://twitter.com/XboxSupport/status/1029889232712527872 UPDATE: All services have returned to normal.