Check if Cisco Duo is down, official outages, user-reported issues, and outages map.
Cisco Duo is working normally
Check the number of user-reported issues over the past 24 hours, grouped into 20-minute intervals. It's normal to see occasional reports, which may be due to individual user issues rather than a broader problem. We only consider an issue widespread if there are multiple reports within a short timeframe.
 
    IsDown has tracked 247 incidents since started monitoring Cisco Duo status in February 2021. We collect data from 4522+ services, and normalize the data to give you a clear picture of the impact of the outage. It will show official Cisco Duo outages and also issues that we're started by a spike in crowdsource reports.
| Date | Incident | Duration | 
|---|---|---|
| Oct 20, 2025 10:28 AM CEST | 
                                              
                                                Major
                                              
                                             We are currently investigating an issue causing phone call and SMS delivery authentication failur...
                                             | about 3 hours | 
| Oct 20, 2025 09:54 AM CEST | 
                                              
                                                Minor
                                              
                                             We are currently investigating an issue affecting email delivery. 
Our team is working to identi...
                                             | about 3 hours | 
| Oct 15, 2025 02:19 PM CEST | 
                                              
                                                Minor
                                              
                                             We are currently investigating an issue causing Duo Desktop to not be recognized during authentic...
                                             | about 8 hours | 
| Oct 07, 2025 09:13 PM CEST | 
                                              
                                                Major
                                              
                                             We are currently investigating an issue causing a full outage for all services on our DUO34 deplo...
                                             | 44 minutes | 
| Sep 29, 2025 11:46 AM CEST | 
                                              
                                                Minor
                                              
                                             We are current investigating issue where custom attributes are not being synced from Entra ID to ...
                                             | about 7 hours | 
| Sep 26, 2025 04:54 PM CEST | 
                                              
                                                Minor
                                              
                                             We have identified an issue preventing administrators from accessing the Duo AI Assistant for the...
                                             | about 8 hours | 
| Sep 09, 2025 06:43 PM CEST | 
                                              
                                                Major
                                              
                                             We have identified an issue causing login failures on cross deployment logins to the Duo Admin Pa...
                                             | 26 minutes | 
| Aug 29, 2025 07:30 PM CEST | 
                                              
                                                Minor
                                              
                                             
                                              Blank Duo Prompt issue impacting users authenticating from both Chrome and Edge version 136 brows...
                                             We are currently aware of an issue that is impacting users logging into web-based applications fr...
                                             | about 12 hours | 
| Aug 26, 2025 04:43 PM CEST | 
                                              
                                                Minor
                                              
                                             We are currently investigating an issue affecting updates or changes made to users in the Admin P...
                                             | 19 minutes | 
| Aug 26, 2025 10:08 AM CEST | 
                                              
                                                Major
                                              
                                             We are currently investigating an issue impacting user management and Active Directory sync on se...
                                             | about 4 hours | 
 
    See what users are saying about Cisco Duo issues that impacted them and how they are affected by the outage. You can see if other users are experiencing the same issues and if there are any workarounds or solutions.
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| Component | Status | Details | 
|---|---|---|
| DUO1 status | OK | View details | 
| DUO10 status | OK | View details | 
| DUO11 status | OK | View details | 
| DUO12 status | OK | View details | 
| DUO13 status | OK | View details | 
| DUO14 status | OK | View details | 
| DUO15 status | OK | View details | 
| DUO16 status | OK | View details | 
| DUO17 status | OK | View details | 
| DUO18 status | OK | View details | 
| DUO19 status | OK | View details | 
| DUO2 status | OK | View details | 
| DUO20 status | OK | View details | 
| DUO21 status | OK | View details | 
| DUO22 status | OK | View details | 
| DUO23 status | OK | View details | 
| DUO24 status | OK | View details | 
| DUO25 status | OK | View details | 
Users are monitoring tens of services with IsDown. Here are some that are monitored together with Cisco Duo. With IsDown you can get a bird's eye view of all your dependencies and how they are performing.
Multi-factor authentication service that provides secure access to applications with features like push notifications, SMS, phone call verifications, and single sign-on capabilities.
Monitoring Cisco Duo since February 2021
Tracking 528 Cisco Duo services and regions
44 incidents in 2025
IsDown is a status page aggregator that monitors if Cisco Duo and all your dependencies are experiencing issues. We combine the status of all the services you dependent and provide a clear view of all your vendors health in one place. We not only monitor official information but also crowdsourced reports. That means that even when Cisco Duo, per example, doesn't report an outage, you will still be notified if other users are experiencing issues.
Every few minutes we go to the status page of Cisco Duo (and 4,522+ other services) and check if they are experiencing issues. We collect the status and outage information of Cisco Duo's 528 components. Also, we not only monitor official sources but also user reports. Sometimes or a lot of times vendors take some time to report an incident, so by monitoring user reports we're able to alert you early.
Not only you will get notified, but IsDown offers notification filters, so you can choose which issues you want to be notified about. This way you avoid getting all the incidents from Cisco Duo and other services.
 
            IsDown checks Cisco Duo official status page for major/minor outages or downtimes. A major outage is when Cisco Duo experiences a critical issue that severely affects one or more services/regions. A minor incident is when Cisco Duo experiences a small issue affecting a small percentage of its customer's applications. An example is the performance degradation of an application. The moment we detect a Cisco Duo outage, we send you an alert and update your dashboard and status page.
Cisco Duo and other vendors don't always report outages on time. IsDown collects user reports to provide early detection of outages. This way, even without an official status update, you can stay ahead of possible problems.
IsDown collects all information from the outages published in Cisco Duo status page to provide the context of the outage. If available, we gather the title, description, time of the outage, status, and outage updates. Another important piece of information is the affected services/regions which we use to filter the notifications that impact your business.
Cisco Duo publishes scheduled maintenance events on their status page. IsDown collects all the information for each event and creates a feed that people can follow to ensure they are not surprised by unexpected downtime or problems. We also send the feed in our weekly report, alerting the next maintenances that will take place.
IsDown monitors Cisco Duo and all their 528 components that can be affected by an outage. IsDown allows you to filter the notifications and status page alerts based on the components you care about. For example, you can choose which components or regions affect your business and filter out all other outages. This way you avoid alert fatigue in your team.
Our tool was build to be the best way to monitor all your external dependencies in one place. IsDown not only will help you monitor Cisco Duo but also 4,522 other services. Your team and customers will have a clear view of all your dependencies and their status, making it easier to identify and resolve issues.
Add all your dependencies to your dashboard. IsDown will monitor them in real-time and send you alerts when there is an issue. You can also create a status page for a bird-eye view and share it with your team.
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                        Not only you will get notified, but IsDown offers notification filters, so you can choose which issues you want to be notified about. This way you avoid getting all the incidents from Cisco Duo and other services.
Start Monitoring for Free 
                        IsDown integrates with 20+ tools. Connect the status of Cisco Duo and 4,522 other vendors to your tools to receive vendor outage alerts exactly where your team needs them.
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                        Create a status page that can easily be access by your team and customers. You can make it public or private, and customize it to your needs. This will be your first line of communication when there's the question 'Is Cisco Duo down?'
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                        While Downdetector relies on user-submitted reports to detect Cisco Duo outages, IsDown monitors Cisco Duo's status page for verified, detailed incident information. Here's why official monitoring provides better reliability for your business:
| Features |   | Downdetector | 
|---|---|---|
| Official Cisco Duo status page monitoring with real-time incident details. | ||
| Monitor 4,522+ services including Cisco Duo in a single dashboard. | ||
| Instant Cisco Duo outage alerts sent to Slack, Teams, PagerDuty, and more. | ||
| Combined monitoring of Cisco Duo official status and user-reported issues. | ||
| Maintenance feed for Cisco Duo | ||
| Granular alerts filtering by Cisco Duo components and regions. | 
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Cisco Duo isn't down. You can check Cisco Duo status and incident details on the top of the page. IsDown continuously monitors Cisco Duo official status page every few minutes. In the last 24 hours, there were 0 outages reported.
Cisco Duo is currently operational. You can check Cisco Duo status and incident details on the top of the page. The status is updated in almost real-time, and you can see the latest outages and issues affecting customers.
No, there is no ongoing official outage. Check on the top of the page if there are any reported problems by other users.
Currently there's no report of Cisco Duo being slow. Check on the top of the page if there are any reported problems by other users.
IsDown monitors the Cisco Duo official status page every few minutes. We also get reports from users like you. If there are enough reports about an outage, we'll show it on the top of the page.
Cisco Duo last outage was on October 20, 2025 with the title "All Deployments: Duo Phone Call and SMS Delivery Failure"
Because IsDown is a status page aggregator, which means that we aggregate the status of multiple cloud services. You can monitor Cisco Duo and all the services that impact your business. Get a dashboard with the health of all services and status updates. Set up notifications via Slack, Datadog, PagerDuty, and more, when a service you monitor has issues or when maintenances are scheduled.
IsDown and DownDetector help users determine if Cisco Duo is having problems. The big difference is that IsDown is a status page aggregator. IsDown monitors a service's official status page to give our customers a more reliable source of information instead of just relying on reports from users. The integration allows us to provide more details about Cisco Duo's Outages, like incident title, description, updates, and the parts of the affected service. Additionally, users can create internal status pages and set up notifications for all their third-party services.
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