A long list of services has been unavailable or intermittently impacted since the outage began more than 24 hours ago. Currently, the company says that elements of Microsoft 365 products that interact with Exchange Online and email services may be affected in various ways, but components of that don’t rely on that interaction remain functional.

Aside from email itself, which may be delayed or inaccessible, some potentially unexpected products are suffering.

For example, users may not be able to load some Microsoft 365 Admin Center pages, and Cloud Update, Cloud Policy, and Inventory in Microsoft 365 Apps Admin Center are affected. Users may not be able to load Copilot 365 Chat or receive responses from either the web version or the app, and Microsoft Intune device enrollment, device check-in, and device compliance policies “may have been intermittently impacted.” A long list of functions in Microsoft Purview and Microsoft Teams are impacted, and customers who have configured their Windows 365 tenant and Cloud PCs to use Microsoft Purview Customer Key for Windows 365 Cloud PCs may have users who are unable to connect to their Cloud PCs.