Resolved Service Degradation

This incident has been resolved.

We observed some delays or failures in the delivery of outbound SMS to the AT&T network in the US. SMS sent to other networks was unaffected. Most end users were able to succeed with a retry. We actively worked with our providers to resolve the issue and will provide an update when we have further information. Okta recommended affected AT&T mobile customers use an alternate second factor to work around the issue. Resolved: Okta received reports of delays and failures in the delivery of SMS for multi-factor authentication. Upon further investigation, it was determined that the issue was caused by an on-going AT&T cellular network incident. Okta worked with its service providers to raise the issue and worked with customers to workaround the the issue until service was fully restored by AT&T. Users who were not on the AT&T cellular network or that leveraged other authentication factors were not affected throughout the incident.