Microsoft 365 outage disrupts Outlook and Teams services globally
The disruption, which began late Thursday, affected email, calendars and AI tool connections before partial restoration on Friday evening.
A global outage of Microsoft 365 services disrupted office operations including Outlook email, Teams calendars and connections to ChatGPT and Claude, according to the Times of India.
The issue began late Thursday in India and was partially resolved by Friday evening, though intermittent problems continued. Microsoft stated it found no evidence of a cyberattack and noted that mailbox access was improving by late evening in India.
The disruption centred on Exchange Online, where some servers went offline unexpectedly. Microsoft began undoing a recent network change that occurred at the same time as the outage to investigate if it caused the problem.
Several companies used alternatives like Slack, Webex and Zoom to maintain operations. Tata Motors Passenger Vehicles moved a quarterly results webcast to StreamCart, while IBM reportedly used Slack for communication. HDFC Bank stated on X that its banking services remained available.
Airlines and airport operators reported that while operations continued, email communication with passengers was interrupted. Air India rerouted messages, IndiGo directed passengers to its 6E Skai chatbot, and Akasa Air advised customers to use social media or phone calls.
Microsoft India and South Asia president Puneet Chandok expressed regret on LinkedIn for the disruption, stating that global teams were working urgently to resolve the issue.