Microsoft struggles to fix global outage hitting Outlook, Teams, and Copilot

Microsoft is struggling to resolve a global outage affecting Outlook and other services like Teams, Microsoft 365, and Copilot, with fix attempts showing only marginal success as of Friday morning. The company attributed the issue to an unexpected unavailability of a large number of servers, which overloaded remaining ones, and denied it was a cyberattack. Downdetector reported tens of thousands of user complaints across 74 countries, though the exact number affected remains unconfirmed. The outage has disrupted government agencies in Singapore and Australia, UK doctor offices, and businesses worldwide, with experts noting significant productivity losses. Microsoft warned some restored services may become unavailable again and continues to investigate the root cause.