Microsoft Stock Drops as Global Outage Cripples Outlook, Teams and Copilot Nauman Khan Fri, November 13, 2026 at 6:35 AM EST 1 min read MSFT -1.35% WKHS 0.00% Trade MSFT on Coinbase Trading disclosure Trading disclosure The above button links to Coinbase. Yahoo Finance is not a broker-dealer or investment adviser and does not offer securities or cryptocurrencies for sale or facilitate trading. Coinbase pays us for certain activity generated through this link. Prices displayed are informational.
Microsoft (NASDAQ:MSFT) shares fell about 3% early Friday after a widespread service disruption affected several of its key business applications, including Outlook, Teams and its AI assistant Copilot, disrupting operations for businesses and government agencies across multiple countries.
The problems involved Microsoft 365 services connected to Exchange Online, the company's email platform. More than 130,000 users reported difficulties accessing Outlook on Downdetector at the height of the disruption on Thursday.
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Microsoft said engineers were investigating the underlying infrastructure and testing fixes. However, corrective measures did not deliver the expected improvements, leaving several services affected hours after the initial reports emerged.
The company said it had found no evidence of a cyberattack and was continuing efforts to restore normal operations. The disruption also affected corporate activities, prompting Workhorse Group to postpone its quarterly earnings conference call.
Government agencies in Singapore, Japan and the Philippines reported interruptions to their email systems or internal operations. Airlines in India also experienced customer-support email problems, although Air India and IndiGo said their flight operations remained unaffected.
