Microsoft has traced the global outage that disrupted Outlook, Teams, Copilot and other Microsoft 365 services to an issue introduced during an earlier network-capacity upgrade that surfaced after a later network change.
In a November 13 statement on its official X account, the company said it had addressed the underlying issue and was seeing broad recovery, while it continued restoring service to remaining customers and regions. The Microsoft service health dashboard continued to list service degradation.
Microsoft said the incident was a technical issue unrelated to cyber activity or AI agents. It said services were restored gradually to validate stability as traffic returned, and apologized for the disruption. The company plans to publish a full post-incident report after its review is complete, according to TechRadar’s report on the statement.
The outage began on November 12 and continued into Friday, disrupting Outlook, Teams, Copilot and other Microsoft 365 services for businesses, public agencies and individual users, as described in Abijita’s initial outage report. Microsoft said some customers could still experience intermittent access problems or delayed email delivery as recovery continued.
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