While Microsoft says it has made "progress toward recovery," thousands still report issues on Downdetector.com. The outage has likely hit around 430 million users who use Microsoft 365 apps, which includes Outlook and Teams. According to BBC, over 90% of Fortune 500 companies use Copilot. A Microsoft 365 outage has disrupted Outlook, Teams, SharePoint Online and Copilot for users across several countries. Downdetector reports for Outlook peaked near 140,000 as Microsoft works.