Microsoft resolves outage after over 36 hours, says all services, including Outlook and Teams, restored

Detailed summary

Microsoft has resolved its global outage after more than 36 hours, restoring Outlook, Teams, Copilot and other services. To remind you, the disruption affected businesses, airlines and government organisations across more than 70 countries.

Microsoft has finally resolved its global outage after more than 36 hours of disruption, restoring access to Outlook, Teams, Copilot and other Microsoft 365 services. The company said early on Saturday, November 14, that efforts to address the underlying technical problem had been completed, bringing relief to millions of users who had struggled to access workplace tools, emails and other services.

Notably, the disruption affected more than 70 countries, hitting businesses, government institutions and individual users. Microsoft said customers using Outlook, Teams and Copilot should no longer be affected, although the company continues to monitor its infrastructure and email backlogs. It has also apologised for the disruption and promised a detailed post-incident report explaining what went wrong.

The outage began on Thursday, November 12, when users started reporting problems accessing Exchange Online mailboxes. The disruption soon spread to several Microsoft 365 services, including Outlook, Teams, Copilot, SharePoint, Planner, To Do and other workplace applications.

While Teams continued to support core messaging and online meetings largely normally, features relying on Exchange Online, including calendars and meeting scheduling, were affected. Copilot users also faced difficulties loading chats and accessing work-related information such as emails, calendars and files.

Microsoft traced the incident to a technical issue associated with an earlier network capacity upgrade that surfaced following a more recent network change. The company also ruled out a cyberattack or an artificial intelligence agent as the cause.

In one of its updates, Microsoft said, "This was a technical issue not related to cyber or AI / agents."

The impact extended well beyond people unable to check their inboxes. Businesses struggled to communicate with customers, access research material and conduct routine operations.

In India, IndiGo warned that its email support services were affected and that…

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