Microsoft has admitted fault in a widespread digital outage that left numerous businesses and government systems offline for several hours. The incident, which occurred on November 15, 2026, affected critical services across multiple regions, including Europe, North America, and parts of Asia. According to internal reports, the outage was caused by a software update error that triggered a cascading failure in Microsoft’s cloud infrastructure.

The error led to a complete loss of connectivity for over 100,000 organizations using Microsoft’s Azure and Office 365 platforms. Government agencies, financial institutions, and healthcare providers were among the most impacted. Some systems remained offline for more than 12 hours, causing significant operational delays. Microsoft confirmed that the issue was resolved by midday on November 16, 2026.

This outage marks one of the largest disruptions in Microsoft’s history. The company has launched an internal investigation to determine the full extent of the error and is working with affected clients to provide compensation and support. The incident highlights the growing reliance on cloud services and the potential risks of system-wide failures. It also underscores the need for more robust fail-safes in critical infrastructure.