Resolved - From approximately 3:36 PM to 3:56 PM EST, some customers encountered an error message displaying “Unknown Error” when attempting to edit an application’s settings in the Duo Admin Panel.

Duo routinely programmatically identifies new versions of operating systems and browsers as part of the Duo platform’s ability to enforce policy based on browser and OS version. Today a pre-release version of an operating system was identified and mistakenly set as the most current publicly available version of that operating system. Because this pre-release version has yet to be given an official version number by the vendor, an issue occurred when Duo’s policy engine attempted to determine the version number for this OS.

Duo’s Engineering team was alerted to this issue at 3:36 PM and immediately diagnosed and corrected the affected data within the platform. Updates to the platform are already underway to ensure that this issue does not happen again.
Nov 12, 16:00 EST

Resolved - We can confirm that the phone authentication delivery issue has been remediated within the United Kingdom.

The issue will continue to be monitored to ensure it is completely resolved.

An RCA will be posted detailing the issue once available.

Please check back here or subscribe for further updates.
Nov 12, 12:01 EST

Resolved - After yesterday's change to the new caller ID number for phone call authentications, we have observed issues with calls to U.S. devices being blocked by several carriers.

We have reached out to our telephony providers to whitelist the new numbers. We have also added more numbers from which the phone call authentication can originate. The Knowledge Base article that lists the new numbers is here:

https://help.duo.com/s/article/5516?language=en_US

For more information on yesterday's incident, please see https://status.duo.com/incidents/pb4twk50clsl.

An RCA will be released detailing the issue once available.

Please check back here or subscribe to updates for any changes.
Nov 8, 17:12 EST

Resolved - We can confirm that the phone authentication delivery issue has been remediated. The issue will continue to be monitored to ensure it is completely resolved.

Due to issues at the carrier level, it is not recommend to modify the outbound caller ID in the Admin Panel to reflect the old phone number. The new caller ID that your users will see is +1-669-201-9315.

An RCA will be posted detailing the issue once available.

Please check back here or subscribe for further updates.
Nov 7, 20:30 EST