Global outage hits Microsoft's Outlook, 365 services

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Microsoft 365, Outlook and Teams were down for thousands of users on Friday (NZ time), with the disruption also hitting connectors used by OpenAI's and Anthropic's AI services.

Microsoft Outlook has suffered a major outage across the world, with tens of thousands of users struggling to access their email as the company said it was working "aggressively" to reduce the impact.

The disruption, which Microsoft attributed to "elevated load" on its infrastructure, dragged on for much of the workday and also affected other company products such as Teams and the AI assistant Copilot.

In an update on Friday night (NZT), Microsoft said it was not aware of any "malicious activity" behind the hours-long disruption.

"As of now, we are not aware of any malicious activity that is causing this incident. We will continue to treat this incident with urgency and priority until full resolution."

The disruption went global within a span of an hour, knocking out Microsoft products in 74 countries and territories, outage tracker Downdetector reported.

A map posted by Downdetector on X showed the outage affected users across the Americas, and parts of Europe, Asia and Africa.

Microsoft initially said it was investigating outage reports "in the Americas", but later confirmed that the issue apparently affected "Microsoft 365 service connectivity for users in any region".

Microsoft 365 is the company's cloud-based subscription service that includes popular applications such as Outlook and Teams.

"We've determined a portion of infrastructure is experiencing elevated load across multiple regions, which is likely contributing to the connectivity errors," the company wrote on X.

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