Microsoft is currently addressing a significant outage affecting multiple Microsoft 365 services, including:
– Exchange Online
– Microsoft Teams
– SharePoint Online
– OneDrive
– Purview
– Copilot
– Outlook (Web and Desktop)
Key Points:
1. The outage began approximately six hours ago, generating thousands of user reports on Downdetector.
2. Impact:
– Users cannot access Exchange Online through various clients
– Teams calendar functionality is affected
– Issues reported with Microsoft Fabric, Bookings, and Defender for Office365
3. Response and Resolution:
– Microsoft has identified the cause as a “recent change”
– A fix is being deployed (60% complete)
– Manual system restarts are being performed on affected machines
– Company is actively monitoring the situation
Historical Context:
A previous worldwide outage in July affected Microsoft 365 and Azure services, which was later confirmed to be caused by a DDoS attack.
Current Status:
While Microsoft is implementing fixes, the official Office service health and Microsoft 365 network status pages show no network health or availability issues.
This incident highlights the ongoing challenges in maintaining reliable cloud-based enterprise services and the importance of having contingency plans for service disruptions.