WASHINGTON, Nov 13 — Microsoft Outlook suffered a major outage across the world Thursday, 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 US workday and also affected other company products such as Teams and the AI assistant Copilot.

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.