# Duo Security incident history

- **Duo Security**: [Duo - Partial Hardware Token Authentication Issues - United States](https://down.guide/duo/DWN-c4e302730a) (Degraded; lasted 1h 20m; started 2026-09-03 22:04 UTC; Core Authentication Service, Core Authentication Service, Core Authentication Service +20; us)
- **Duo Security**: [New Signups Unavailable](https://down.guide/duo/DWN-bf2c8af4a8) (Degraded; lasted 2h 12m; started 2026-08-10 20:34 UTC)
- **Duo Security**: [Duo Phone Call Authentication Failures - United States](https://down.guide/duo/DWN-e244d1b902) (Degraded; lasted 2h 54m; started 2026-08-08 21:13 UTC; Phone Call Delivery, Phone Call Delivery, Phone Call Delivery +45; us)
- **Duo Security**: [VoIP and SMS Delivery Issues in Israel](https://down.guide/duo/DWN-eb3277c36e) (Degraded; lasted 4d 2h; started 2026-07-23 18:02 UTC)
- **Duo Security**: [Duo - Phone call and SMS authentication issues - Australia](https://down.guide/duo/DWN-f40ec166c1) (Degraded; lasted 15h 46m; started 2026-07-07 23:15 UTC; Phone Call Delivery, SMS Message Delivery; au)
- **Duo Security**: [UAE Telephony SMS issue](https://down.guide/duo/DWN-7f369e17f1) (Degraded; lasted 10h 23m; started 2026-06-23 03:58 UTC; SMS Message Delivery; me)
- **Duo Security**: [AI Assistant Service Disruption in US-W1](https://down.guide/duo/DWN-7bd7e40663) (Degraded; lasted 1h 18m; started 2026-06-10 14:17 UTC; AI Assistant, AI Assistant, AI Assistant +23; us)
- **Duo Security**: [All US Deployments: AI Assistant failures](https://down.guide/duo/DWN-033c596267) (Degraded; lasted 1h 53m; started 2026-05-18 18:37 UTC; AI Assistant, AI Assistant, AI Assistant +45; us)
- **Duo Security**: [Authentication failures](https://down.guide/duo/DWN-fb8781f938) (Degraded; lasted 2h 41m; started 2026-05-13 13:22 UTC; Core Authentication Service)
- **Duo Security**: [AI Assistant First-Time Access Failures for EU Administrators](https://down.guide/duo/DWN-7bd89f3d89) (Degraded; lasted 8h 23m; started 2026-05-07 14:17 UTC; AI Assistant, AI Assistant, AI Assistant +3; eu)
- **Duo Security**: [Desktop Authenticator Enrollment Degradation](https://down.guide/duo/DWN-65bc435605) (Degraded; lasted 13m; started 2026-04-30 17:54 UTC; Admin Panel, Admin Panel, Admin Panel +19)
- **Duo Security**: [Elevated Authentication Latency in DUO6](https://down.guide/duo/DWN-ac6b1adb2e) (Partial outage; lasted 1h 3m; started 2026-04-28 14:22 UTC; Core Authentication Service)
- **Duo Security**: [SMS Delivery Failures](https://down.guide/duo/DWN-8b1633e14a) (Partial outage; lasted 2h 40m; started 2026-04-18 04:30 UTC; SMS Message Delivery, SMS Message Delivery, SMS Message Delivery +45; us)
- **Duo Security**: [Duo Phone Call Authentication Failure for US Based Carriers](https://down.guide/duo/DWN-8ec300a3d2) (Degraded; lasted 4h 10m; started 2026-03-22 22:13 UTC; us)
- **Duo Security**: [Duo Phone Call Authentication Failure for US Based Carriers](https://down.guide/duo/DWN-a34009667a) (Degraded; lasted 3h 15m; started 2026-03-22 17:18 UTC; us)
- **Duo Security**: [Service Outage on DUO81](https://down.guide/duo/DWN-361011b83e) (Major outage; lasted 1d 15h; started 2026-03-02 08:30 UTC; Core Authentication Service, Admin Panel, Push Delivery +4; me)
- **Duo Security**: [Service degradation on DUO81](https://down.guide/duo/DWN-4a5769bb7e) (Degraded; lasted 3h 10m; started 2026-03-01 13:29 UTC; Core Authentication Service, Admin Panel, Push Delivery +4)
- **Duo Security**: [All Deployments - Entra 504 Gateway Timeouts](https://down.guide/duo/DWN-b31c6ed9bf) (Degraded; lasted 2h 48m; started 2026-02-23 15:04 UTC; Core Authentication Service, Core Authentication Service, Core Authentication Service +76; us)
- **Duo Security**: [\[US Deployments\]: Duo Phone Call Authentication Failures for US Region](https://down.guide/duo/DWN-30b129894d) (Degraded; lasted 4h 18m; started 2026-02-23 14:02 UTC; Phone Call Delivery, Phone Call Delivery, Phone Call Delivery +46; us)
- **Duo Security**: [\[Multiple Deployments\] AI Assistant not available in India](https://down.guide/duo/DWN-ae29cf85ec) (Degraded; lasted 3h 15m; started 2026-02-19 14:46 UTC; AI Assistant, AI Assistant, AI Assistant +46; in)
- **Duo Security**: [\[All Deployments\] AI Assistant Outage for new users](https://down.guide/duo/DWN-cace6ab2bb) (Degraded; lasted 7h 57m; started 2026-02-19 14:35 UTC; AI Assistant, AI Assistant, AI Assistant +45)
- **Duo Security**: [\[All Deployments\] AI Assistant Outage for new users](https://down.guide/duo/DWN-d56fe3780c) (Degraded; lasted 7h 3m; started 2026-02-18 18:28 UTC; AI Assistant, AI Assistant, AI Assistant +45)
- **Duo Security**: [All Deployments: Duo Enrollment URL Session Expired Errors](https://down.guide/duo/DWN-d202e775a3) (Degraded; lasted 6h 16m; started 2026-02-04 18:55 UTC; Admin Panel, Admin Panel, Admin Panel +75)
- **Duo Security**: [\[DUO4\] Authentication Failures](https://down.guide/duo/DWN-b44892e537) (Partial outage; lasted 1h 42m; started 2026-01-22 18:36 UTC; Core Authentication Service)
- **Duo Security**: [All Deployments: Authentication Failures for Newly Created MSP Sub-Accounts](https://down.guide/duo/DWN-b0dab48b16) (Degraded; lasted 1h 54m; started 2026-01-21 21:38 UTC; Core Authentication Service, Core Authentication Service, Core Authentication Service +76; us)
- **Duo Security**: [SMS, Phone Call, Push delivery failures due to ongoing carrier outages](https://down.guide/duo/DWN-47142686cb) (Degraded; lasted 10h 41m; started 2026-01-14 19:35 UTC)
- **Duo Security**: [Duo Support Phone System Issue](https://down.guide/duo/DWN-e8d9dfbf14) (Partial outage; lasted 1h 24m; started 2025-12-23 07:35 UTC; Phone Support; us)
- **Duo Security**: [New Duo Trial Signup Failures](https://down.guide/duo/DWN-255ff925ed) (Degraded; lasted 3h 4m; started 2025-12-19 17:59 UTC)
- **Duo Security**: [All Deployments: Duo Phone Call and SMS Delivery Failure](https://down.guide/duo/DWN-27382d2d25) (Partial outage; lasted 2h 38m; started 2025-10-20 08:28 UTC; Phone Call Delivery, Phone Call Delivery, Phone Call Delivery +155)
- **Duo Security**: [All Deployments: Email delivery issues](https://down.guide/duo/DWN-54dcf6174b) (Degraded; lasted 3h 26m; started 2025-10-20 07:54 UTC; Admin Panel, Admin Panel, Admin Panel +75)
- **Duo Security**: [\[All Deployments\] Duo Desktop not being recognized on Windows 11 24H2/25H2](https://down.guide/duo/DWN-d793c9c5df) (Degraded; lasted 7h 42m; started 2025-10-15 12:19 UTC; Core Authentication Service, Core Authentication Service, Core Authentication Service +76)
- **Duo Security**: [\[DUO34\] Full Deployment Outage](https://down.guide/duo/DWN-479fa83bd7) (Major outage; lasted 43m; started 2025-10-07 19:13 UTC; Core Authentication Service, Admin Panel, Push Delivery +2)

[Back to Duo Security](https://down.guide/duo)

---
down.guide reads providers' official status pages every minute and adds its own evidence, always labeled. Free, no account. Agents: MCP at https://down.guide/mcp, REST at https://down.guide/api/v1, feeds at https://down.guide/feed. Built by Sazabi (https://sazabi.com/?utm_source=down-guide&utm_medium=markdown).