Microsoft tries to fix Outlook and Copilot hours into outage

Résumé détaillé

Leaving users unable to use email and chat services in one of the tech giant’s most severe disruptions in recent memory.

Microsoft is struggling to restore access to its flagship software half a day after an outage began, leaving users unable to access email and chat services in one of the tech giant’s most severe disruptions in recent memory.

Users across the world on Friday reported problems with Outlook, Teams and the Copilot artificial intelligence tool, after the services were unavailable for many during the previous day in the US. Microsoft’s products are among the most widely used software among business, government and educational institutions.

The outage, which attracted about 200 000 reports of user issues on Downdetector, ranks among the company’s most significant. Previous disruptions have rarely lasted more than several hours. Microsoft shares were down 0.4% in extended trading.

Though the number of new reports of disruption has slowed, services have not been restored.

As the outage intensified on Thursday, Microsoft added to its tally of products users might not be able to access. In a series of updates to its status page, the company provided details of frustrated efforts to fix its malfunctioning systems and route user traffic away from affected servers.

It said an investigation into the incident had found “a core process on the affected servers is becoming overwhelmed, which causes the servers to stop responding and contributes to the capacity loss.”

Microsoft said that it was trying to “pinpoint the underlying cause of the traffic influx,” adding “we are not aware of any malicious activity that is causing this incident.”

In the US, the outage led Workhorse Group, a US-based truck and bus manufacturer, to postpone its earnings release. School districts, universities and hospitals were among those warning that communications might be limited.

PVH Corp, the apparel conglomerate that owns the Calvin Klein and Tommy Hilfiger brands, announced Thursday in internal company emails and stock exchange filings that it would cut about 4% of its global workforce.

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