Affected
Partial outage from 11:15 PM to 3:54 PM
Partial outage from 11:15 PM to 3:54 PM
- ResolvedResolved
Final status: After an extended period of monitoring, in addition to internal validations and customer confirmations, we have declared the incident resolved. We understand the impact this incident has had on our users and greatly appreciate your organization's patience and feedback while we worked to resolve this high priority issue in its entirety.
Scope of impact: This issue may have impacted any user attempting to use various Microsoft 365 apps and services.
Start time: Thursday, July 18, 2024, at 9:56 PM UTC
End time: Friday, July 19, 2024, at 1:55 AM UTC
Preliminary root cause: A configuration change in a portion of our Azure backend workloads, caused interruption between storage and compute resources which resulted in connectivity failures that affected downstream Microsoft 365 services dependent on these connections.
Next steps:
- We're conducting a comprehensive review of our configuration change validation procedures to identify methods of detecting similar issues before they are deployed in the future.
A post-incident report will be available on the Service Health Dashboard within five business days. - MonitoringMonitoring
The underlying cause of the issue has been fixed and several Microsoft 365 apps and services have been restored to full functionality. Residual impact is still affecting some Microsoft 365 apps and services, and Microsoft 365 engineering continues to conduct additional mitigation actions to provide relief. We're continuing to observe an increase in functionality and availability for the remaining impacted scenarios and we're monitoring this closely to ensure progress towards full recovery. Microsoft is continuing to treat this event with the highest possible priority.
- IdentifiedIdentified
User impact: Users may be unable to access various Microsoft 365 apps and services.
Impacted services may include but are not limited to the following:
- SharePoint Online
Users may be unable to access SharePoint Online sites.
- OneDrive for Business
Users may be unable to access OneDrive for Business content.
- Microsoft Teams
Users may be unable to leverage Microsoft Teams functions including chat, messaging, and meeting management.
- Microsoft Intune
Users may experience failures with device check-in, syncing and device enrollment.
- PowerBI
Users may notice that their service is in read-only mode while the impact is addressed.
- Microsoft Fabric
Users may notice that their service is in read-only mode while the impact is addressed.
- Microsoft Defender
Users may be intermittently unable to access the Microsoft Defender portal. Additionally, users may notice delays of up to two hours when raising new detections. - Microsoft Defender for Endpoint: Admins and users may notice API requests failing and errors when opening Alerts in the Alerts page.
- Viva Engage
Users may be unable to access Viva Engage.
- Microsoft 365 admin center
Admins may be intermittently unable to access the Microsoft 365 admin center and any action may be delayed if accessible.
Current status: Microsoft is actively working on this fault and is observing a positive trend of service availability as their mitigation efforts progress. In parallel, they are working on a mitigation to address the suspected root cause of this event. They remain committed to treating this incident with the highest priority to ensure it resolves in a timely manner.