Microsoft Login Outage
Inability to login to new sessions of applications using Microsoft login
Microsoft has confirmed that they are actively investigating the issue.
Login is unavailable to systems using Microsoft Azure including:
- Office 365
- Outlook on the Web (portal.office.com)
- Self Service Password Reset
- Multi-Factor Authentication
If you opened a session in one of these applications prior to the outage, you can continue to work in the application and are not impacted. Continue to keep that session open; once closed you will be unable to re-login.
The Central Authentication System (CAS) is not impacted.
Updates will be made as they become available.
Timeline & Updates
18 October 2018, 8:34 AM
Microsoft Determines Outage Root Cause
Microsoft released root cause information regarding the login service outage. A third-party IP filtering service deployed an update that incorrectly identified Azure Active Directory (AAD) URLs as malicious IPs. This affected access to the Microsoft 365 portal and other services that leverage AAD for authentication.
11 October 2018, 2:35 PM
Microsoft Login Restored
Login to impacted systems has been restored. There may be intermittent lingering issues as Microsoft completes the fix.
11 October 2018, 2:04 PM
Login Outage Information from Microsoft
Microsoft has identified the potential cause of impact and they are applying a mitigation to remediate the problem.
Posted: 11 October 2018, 12:15 PM
Start: 11 October 2018, 11:15 AM
11 October 2018
11 October 2018, 12:15 PM