Microsoft Exchange Online outage disrupts email, authentication and Microsoft 365 services
Summary
Microsoft is investigating an Exchange Online outage causing authentication errors, email delays and mailbox failures. It cites a core authentication configuration issue; OneDrive, SharePoint, Teams, Purview and Defender XDR are also affected.
Key points
- Microsoft is investigating the outage under incident IDs EX1464935 and MO1465074.
- Reported symptoms include email delays or failures, mailbox search problems, authentication errors and difficulties using Exchange administration tools.
- Microsoft identified issues with a core authentication configuration used by multiple internal Exchange Online services as a likely cause.
- The company said it was testing server-level configuration resets while investigating remediation.
- OneDrive for Business, SharePoint Online, Microsoft Teams, Microsoft Purview and Microsoft Defender XDR were also reported as affected.
- Microsoft had not identified the impacted regions in the supplied article.
Article Details
- Event Type
- Microsoft Exchange Online service outage
- Impact
- Authentication errors, email delays and failures, mailbox search and access problems, and difficulties using Exchange administration tools. Microsoft also reported impacts to OneDrive for Business, SharePoint Online, Microsoft Teams, Microsoft Purview, and Microsoft Defender XDR. Microsoft identified issues related to a core authentication configuration as the cause under investigation.
Vendors
Products
Exchange OnlineMicrosoft is investigating a widespread Exchange Online incident that is causing authentication problems, email delays, and mailbox access failures for many users.Microsoft 365 Apps for EnterpriseThe outage, tracked as EX1464935 and later MO1465074, also affects other Microsoft 365 services including OneDrive for Business, SharePoint Online, Microsoft Teams, Microsoft Purview, and Microsoft Defender XDR.Microsoft Defender XDRThe outage, tracked as EX1464935 and later MO1465074, also affects other Microsoft 365 services including OneDrive for Business, SharePoint Online, Microsoft Teams, Microsoft Purview, and Microsoft Defender XDR.Microsoft OneDriveThe outage, tracked as EX1464935 and later MO1465074, also affects other Microsoft 365 services including OneDrive for Business, SharePoint Online, Microsoft Teams, Microsoft Purview, and Microsoft Defender XDR.Microsoft PurviewThe outage, tracked as EX1464935 and later MO1465074, also affects other Microsoft 365 services including OneDrive for Business, SharePoint Online, Microsoft Teams, Microsoft Purview, and Microsoft Defender XDR.Microsoft TeamsThe outage, tracked as EX1464935 and later MO1465074, also affects other Microsoft 365 services including OneDrive for Business, SharePoint Online, Microsoft Teams, Microsoft Purview, and Microsoft Defender XDR.SharePoint OnlineThe outage, tracked as EX1464935 and later MO1465074, also affects other Microsoft 365 services including OneDrive for Business, SharePoint Online, Microsoft Teams, Microsoft Purview, and Microsoft Defender XDR.