A widespread Microsoft outage disrupted Outlook email, Teams and other Microsoft 365 services Thursday, leaving users across the United States struggling to access their accounts, send messages and connect to workplace applications. Microsoft confirmed problems across multiple regions, including disruptions to Exchange Online, the cloud service behind many business email accounts, along with some cybersecurity and data management tools. Engineers worked throughout the afternoon to restore service, although Microsoft had not announced when the affected systems would be fully operational as of its Thursday afternoon updates.
The Microsoft 365 outage affected technology that businesses rely on for everyday communications, document sharing, cybersecurity and administrative work, including applications used throughout Tampa Bay. Public records and company documents identify Microsoft products in use at Jabil, Raymond James, Publix, Tampa General Hospital and the University of South Florida, along with local governments, educational institutions and the Tampa Bay Buccaneers. Those organizations use various Microsoft services, but none has been independently confirmed as experiencing problems Thursday.
Beyond Outlook and Teams, Microsoft’s products support the systems companies use to protect sensitive records, manage information and coordinate operations across departments and locations. The company also provides cloud infrastructure, identity management and industrial software used in healthcare, manufacturing, transportation and utilities. Those technologies do not necessarily depend on the same infrastructure involved in Thursday’s disruption, and no verified evidence establishes that the Microsoft outage affected Tampa Bay’s electricity, water treatment, airport operations or emergency services.
Microsoft attributed the Outlook connection problems to servers unexpectedly going offline, forcing the remaining infrastructure to handle more traffic and making it harder for customers to connect. Engineers redirected traffic, restarted affected servers and adjusted automated health checks while working to restore access. The company advises businesses to maintain backup communication methods, including phone calls, text messages and independent collaboration platforms, during extended service interruptions.
Customers experiencing problems with Microsoft Outlook, Teams or other Microsoft 365 applications can check the company’s service health dashboard for updates on affected systems and restoration efforts. Business administrators can also review incidents and service advisories through their Microsoft 365 accounts.