Outage in Duo Security
VoIP and SMS Delivery Issues in Israel
Resolved MinorIncident Report
Summary AI Generated
Duo Security experienced a ~99-hour outage affecting VoIP and SMS message delivery for users in Israel, caused by an upstream carrier issue. A configuration change was implemented on July 23, 2026, which restored delivery, though some intermittent failures persisted during a monitoring period. The incident was fully resolved on July 27, 2026; Duo Push was available as an alternative authentication method throughout the disruption.
We are investigating an issue affecting VoIP and SMS message delivery for users in Israel. The issue is related to an upstream carrier.
Our team is working with our providers to investigate and restore normal service. Where available, users can use alternative authentication methods such as Duo Push.
We will provide updates as more information becomes available.
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Latest Updates ( sorted recent to last )
RESOLVED
17 days ago - at 07/27/2026 08:41PM
The SMS and VoIP delivery issue affecting users in Israel has been resolved. If customers continue to experience issues, please contact Duo Support.
MONITORING
20 days ago - at 07/24/2026 03:53PM
Error rates for SMS and VoIP delivery in Israel have reduced following the implemented change. We are continuing to monitor service behavior and investigate reports of intermittent failures affecting some customers.
We will provide another update as more information becomes available.
MONITORING
21 days ago - at 07/23/2026 06:39PM
We have implemented a change to address the SMS and VoIP delivery issue affecting users in Israel. SMS and VoIP delivery have recovered, and we are monitoring to confirm continued stability.
INVESTIGATING
21 days ago - at 07/23/2026 06:02PM
We are investigating an issue affecting VoIP and SMS message delivery for users in Israel. The issue is related to an upstream carrier.
Our team is working with our providers to investigate and restore normal service. Where available, users can use alternative authentication methods such as Duo Push.
We will provide updates as more information becomes available.
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