Microsoft Outlook was down worldwide for four hours

Microsoft’s Outlook service was down worldwide today, affecting Outlook on the web, Outlook.com, and Outlook on desktop and mobile. The outage started at around 2AM ET, after Microsoft has confirmed it was affecting users worldwide. Outlook users were unable to access their email, and Outlook.com was failing to load for around four hours.

Microsoft says a recent configuration change was to blame for the issues. “We’ve determined that a recent configuration update to components that route user requests was the cause of impact,” says Microsoft in a service message on Twitter. “We’ve reverted the update and are monitoring the service for recovery.”

This is the second major Microsoft services outage in less than a week. On Monday Microsoft...

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