Microsoft Fixes Widespread Outage After 36 Hours, Confirms Full Restoration Of Services

Microsoft has announced the restoration of its services following a widespread technical outage that lasted more than 36 hours and affected users across the globe.

Outlook, Microsoft Teams, Copilot and several other Microsoft 365 applications are now operational, the company confirmed early Saturday, November 14.

The prolonged disruption left millions of individuals and organisations struggling to access essential workplace tools, emails and communication platforms. According to Microsoft, the technical issue responsible for the outage has been addressed, although monitoring of its systems and delayed email deliveries is continuing.

The disruption reportedly affected users in more than 70 countries, impacting businesses, government organisations and individual customers. Microsoft has apologised for the inconvenience and said it will publish a comprehensive report detailing the cause of the incident and the steps taken to resolve it.

Microsoft 365 Services Back Online After Prolonged Disruption

The technical problems first emerged on Thursday, November 12, when users began experiencing difficulties accessing their Exchange Online mailboxes. What initially appeared to be an email-related issue gradually affected multiple applications within Microsoft’s ecosystem.

Among the services impacted were Outlook, Teams, Copilot, SharePoint, Planner and To Do. While basic messaging and online meetings on Teams remained largely functional, services dependent on Exchange Online, particularly calendars and meeting scheduling, experienced disruptions.

Copilot users also encountered problems accessing conversations and retrieving information from workplace resources, including emails, documents and calendars.

Microsoft’s investigation linked the outage to complications arising from an earlier network capacity upgrade, which became apparent after a subsequent network modification. The company clarified that the incident was caused by a technical failure rather than malicious activity.

In an update explaining the situation, Microsoft stated, “This was a technical issue not related to cyber or AI / agents.”

Businesses And Airlines Among Those Affected

The outage highlighted how heavily organisations depend on Microsoft’s cloud-based infrastructure for everyday operations. Companies faced difficulties communicating internally and externally, retrieving important information and managing routine business activities.

Several government institutions and public organisations also experienced interruptions.

In India, IndiGo disclosed that its email support system had been affected, potentially preventing the airline from receiving customer messages. Passengers requiring immediate assistance were advised to contact the airline through its website or mobile application.

Air India, however, confirmed that its flight operations were running normally. The airline said it had redirected its email traffic to alternative systems to minimise the impact on customer communication.

The disruption also affected technology companies relying on Microsoft’s infrastructure. OpenAI and Anthropic reported difficulties with their Microsoft 365 connectors, which enable their respective platforms to access information from workplace applications.

Microsoft Apologises, Monitoring Continues

Microsoft said it adopted a phased restoration process, checking the stability of its infrastructure at different stages before bringing affected services fully back online.

The company also increased its email timeout window to 48 hours to accommodate delayed messages and help clear accumulated backlogs.

Expressing regret over the incident, Microsoft said, “We are deeply sorry for the disruption this incident has caused our customers and partners.”

The company reiterated that maintaining customer confidence remains a priority and confirmed that its technical teams would continue monitoring service performance following the restoration.

A detailed post-incident report is expected once the investigation is complete. It will provide further information about the technical failure, its widespread impact and measures being considered to prevent similar disruptions.

The incident has once again drawn attention to the risks associated with organisations relying heavily on a limited number of cloud technology providers. Despite the convenience of integrated digital platforms, the outage demonstrated how a single infrastructure problem can disrupt communication and business operations across multiple countries and industries.