Affected services:

  • Office 365
  • Blackboard
  • Zoom

Can't access Microsoft 365 services

Opened on Monday 28th September 2020, last updated

Resolved — Issue is resolved.

Posted by Sid Hatfield

Monitoring — Services are operational but we continue to monitor.

Posted by Sid Hatfield

Identified — Current status: We’ve determined that a specific portion of our infrastructure is not processing authentication requests in a timely manner. We’re pursuing mitigation steps for this issue. In parallel, we’re rerouting traffic to alternate systems to provide further relief to the affected users.

Posted by Sid Hatfield

Identified — Current status: We've identified that reverting the recent change did not alleviate impact to Microsoft services as expected. We're working to explore additional options for mitigation.

Existing customer sessions are not impacted and any user who is logged in to an existing session would be able to continue their sessions.

Users would be unable to access Outlook.com, Microsoft Teams including Teams Live Events, and Office.com. Additionally, Power Platform and PowerApps properties are affected by this incident.

This also affects Blackboard and Zoom which use O365 for authentication.

Posted by Sid Hatfield

Monitoring — Current status: We've identified that reverting the recent change did not alleviate impact to Microsoft services as expected. We're working to explore additional options for mitigation.

Existing customer sessions are not impacted and any user who is logged in to an existing session would be able to continue their sessions.

Users would be unable to access Outlook.com, Microsoft Teams including Teams Live Events, and Office.com. Additionally, Power Platform and PowerApps properties are affected by this incident.

This also affect Blackboard and Zoom which use O365 for authentication.

Posted by Sid Hatfield

Monitoring — Monitoring — Current status: We've completed reverting the change which was likely causing impact and are monitoring the environment to ensure that services are recovering.

Posted by Sid Hatfield

Monitoring — Current status: We've completed reverting the change which was likely causing impact and are monitoring the environment to ensure that services are recovering.

Posted by Sid Hatfield

Identified — Users may be unable to access multiple Microsoft 365 services.

More info: Any Microsoft 365 service that leverages Azure Active Directory (AAD) authentication may be impacted by this issue.

Current status: We've identified and are reverting a recent change to the service which may be causing or contributing to impact.

Posted by Sid Hatfield