Microsoft has fixed an outage that prevented users from setting up multi-factor authentication (MFA) and accessing the My Sign-Ins platform. The incident affected customers globally, blocking critical security configurations.
The company confirmed the issue on its service health dashboard, noting that the root cause has been identified and a fix deployed. Specific details on the underlying technical problem were not disclosed, but the outage lasted approximately two hours before resolution.
Affected users were unable to enroll new MFA methods or manage existing authentication settings through the My Sign-Ins portal. This disruption posed elevated risk for organizations relying on MFA as a key defense against account compromise, particularly during the outage window.
Microsoft stated that all services have been restored and users should now be able to complete MFA setup and access the platform normally. No further incidents have been reported since the fix was applied.
The outage underscores the critical dependency on authentication infrastructure and the cascading impact when such services falter, though Microsoft has not attributed the issue to any external attack or configuration error.