On November 13, Microsoft announced that multiple Microsoft 365 services remain in a degraded state, affecting Exchange Online, Outlook, Teams, Microsoft 365 Copilot, Defender, Fabric, Graph, Intune, Planner, Purview, Power BI, SharePoint Online, To Do, Universal Print, Windows 365, and others. Users may experience difficulties accessing mailboxes, sending and receiving emails, or using certain management, collaboration, data analysis, and security features. Core functionalities such as Teams calls, meetings, group chats, and channel messages remain unaffected, and files stored directly in SharePoint Online are still accessible. Microsoft stated that it is investigating the ongoing traffic management imbalance, examining traffic distribution and the affected infrastructure, and verifying the root cause of the failure in order to develop measures to improve routing and service stability. Previous improvement efforts did not meet expectations, and the company is exploring alternative approaches to increase system capacity.