Microsoft says Microsoft 365 is operating normally again after a global outage affected work email, scheduling, and some AI-assisted access to business data. The company’s official status page now lists its products as healthy after the incident reached organizations in multiple regions.
For people relying on a tablet, phone, or laptop for work, the most visible problems centered on Exchange Online. Some users could not open Outlook mailboxes through the web, desktop app, or mobile app, while email delivery was delayed. Teams chats and calls were largely available, but calendar features and meeting scheduling ran into trouble. Copilot could also lose access to work data such as emails, calendars, and documents.
Microsoft traced the disruption to a network issue connected to an earlier capacity expansion. According to the company, the issue surfaced after a later network change. Microsoft says it found no indication of malicious activity and ruled out involvement by AI systems or AI agents.
Recovery required Microsoft to restore affected servers, rebalance traffic, and add capacity. Some systems initially returned before failing again as traffic resumed, extending the restoration process. The company continued monitoring message queues created during the outage and Exchange-dependent scenarios after the main services came back online.
Organizations that sent time-sensitive email during the incident may want to check Sent folders and internal delivery logs before resending messages repeatedly. Microsoft has said it will publish a post-incident report detailing the technical cause and measures intended to prevent a recurrence.
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