Duo Security incident

India VoIP Failures

Minor Resolved View vendor source →

Duo Security experienced a minor incident on August 18, 2025 affecting Phone Call Delivery and Phone Call Delivery and 1 more component, lasting 4h 2m. The incident has been resolved; the full update timeline is below.

Started
Aug 18, 2025, 11:25 AM UTC
Resolved
Aug 18, 2025, 03:27 PM UTC
Duration
4h 2m
Detected by Pingoru
Aug 18, 2025, 11:25 AM UTC

Affected components

Phone Call DeliveryPhone Call DeliveryPhone Call DeliveryPhone Call DeliveryPhone Call DeliveryPhone Call DeliveryPhone Call DeliveryPhone Call DeliveryPhone Call DeliveryPhone Call Delivery

Update timeline

  1. investigating Aug 18, 2025, 11:25 AM UTC

    We are currently investigating an issue causing phone call authentication failures in India on all of our deployments and are working to correct the issue as soon as possible. Please check back here or subscribe to updates for any changes.

  2. resolved Aug 18, 2025, 03:27 PM UTC

    Duo has confirmed that the phone call authentication failures affecting all deployments in India have been fully resolved.