Microsoft 365 outage disrupts Outlook for 140,000 users worldwide

Microsoft experienced a major outage on Thursday, November 12, disrupting multiple Microsoft 365 applications, including Outlook email, calendars, documents, and its Copilot AI platform, affecting up to 140,000 users. The company stated that its latest efforts to restore services have not yielded the expected results, and it is reviewing data flows and affected infrastructure to optimize routing. Microsoft confirmed there is no evidence the outage resulted from malicious activity. While Microsoft works to resolve the incident, banks, universities, and other institutions worldwide have warned users against relying on unverified IT support providers, as scammers may exploit the crisis for criminal purposes.