Microsoft has been hit by a major global service disruption affecting its Microsoft 365 applications, including Outlook, Microsoft Teams, OneDrive and its artificial intelligence assistant Copilot.
The outage began on Thursday, November 12, continued into Friday, November 13 affecting email access and workplace communication, with thousands of users reporting issues on Downdetector.
Reports indicate that 74 countries and territories have been affected, with 430 million reported users base of Microsoft 365 applications.
Microsoft has acknowledged infrastructure-related problems and is working to restore services. It has not provided the root cause or given a timeline for full recovery.
Microsoft’s first public statement came from its 365 Status account on X, which stated it was investigating problems reaching Exchange Online mailboxes through “multiple connection methods.”
Microsoft has stated it has seen no indication of a cyberattack and the post-incident review has not yet been published.