Microsoft Resolves Global Outlook and 365 Outage Affecting Millions

The outage, caused by a suspected code issue, disrupted email and app access globally for tens of thousands before being largely resolved within hours.

Microsoft services, including Outlook and 365, experienced a global outage on Saturday, impacting millions of users worldwide.
The outage began around 3:30 p.m. ET, with reports peaking at over 40,000 on Downdetector for Outlook and Microsoft 365 services combined.
Microsoft identified the issue as a suspected code problem and reverted the code to mitigate the impact, restoring most services by late afternoon.
Users reported issues accessing email, calendars, and other applications, with some also experiencing login errors across Microsoft services.
The company is continuing to monitor the situation to ensure full recovery and has not yet provided detailed comments on the root cause of the outage.