Microsoft experienced a significant service disruption on Friday that halted communications for businesses and governments worldwide. The outage affected Outlook and Teams, two of the most widely used workplace applications, preventing users from sending emails, managing calendars, and hosting virtual meetings. The company attributed the failure to server issues within its Exchange Online platform, which serves as a cloud-based hub for email and scheduling. Microsoft stated it was not aware of any malicious activity behind the incident, according to Asharq Al-Awsat. The company began rolling out software fixes to stabilize the system, noting that organizations hosting Microsoft services on their own servers were somewhat spared from the disruption.
The impact of the outage was felt across numerous sectors and regions. Government agencies in Australia, Japan, and the United States reported difficulties in communication. In the UK, the National Health Service and London’s Metropolitan Police had to turn to alternate measures, such as paper records and IT systems, to maintain operations. The Metropolitan Police noted that while online crime reporting was impacted, its ability to respond to emergency calls remained unaffected. Airlines, including IndiGo, Akasa Air, and Air India, warned customers of communication lags, while European exchange operator Euronext and British insurer Aviva faced operational delays.
Financial markets and corporate reporting were also disrupted. One Taiwanese securities firm cancelled a bond repurchase transaction, while another resorted to using fax machines to confirm trades. In the United States, electric truck maker Workhorse Group rescheduled its earnings announcement, and Switzerland’s Richemont briefly delayed its first-half results. The outage represents one of the longest in Microsoft’s history and the second major disruption this year, following incidents in January and October. Microsoft shares fell 0.4% in early trading, though they have gained roughly 8% so far this year, according to Asharq Al-Awsat.
Industry analysts highlighted the risks associated with reliance on a few major technology providers. Josh Gilbert, a market analyst at eToro, noted that if reliability becomes a recurring problem, IT departments may reconsider placing all business operations with a single provider. However, some analysts questioned whether such incidents would drive customers to rivals, citing the steep switching costs of replacing deeply embedded tools. Mario De Cicco of Morningstar DBRS estimated global insured losses between $300 million and $500 million, a figure well below the financial toll of the 2024 CrowdStrike outage.