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Millions of British office workers were clocking off on Thursday when Microsoft's email and chat services went offline. As a result, many won't have noticed when the major tech failure began at around 6pm. That all changed when they returned to their computers to resume work on Friday morning. Businesses, hospitals, local authorities and government departments are experiencing severe problems with the software systems that keep them ticking over. The products affected are household names – Microsoft Outlook, Teams, Copilot and Microsoft365 – and the disruption is affecting everything from the emergency services to critical infrastructure, with power grid bosses forced to fall back on using fax machines.
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