Is Cisco Duo Core Authentication Service Down? Check current status

Check if Cisco Duo Core Authentication Service is down, official outages, user-reported issues, and outages map.

Current Cisco Duo Core Authentication Service status

Cisco Duo Core Authentication Service is working normally

Updated from Cisco Duo official status page

Having problems with Cisco Duo Core Authentication Service?

Cisco Duo Core Authentication Service service health. Issues reported in the last 24 hours

Working Normally
Possible Incident
Confirmed Outage

This chart displays 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. Sign up for free to see more Cisco Duo status data.

Recent Cisco Duo Core Authentication Service Outages and Downtime History

IsDown has tracked 16 incidents for Cisco Duo Core Authentication Service 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.

Date Incident Duration
Oct 15, 2025
08:19 AM EDT
Minor
We are currently investigating an issue causing Duo Desktop to not be recognized during authentic...
about 8 hours
Aug 29, 2025
01:30 PM EDT
Minor
We are currently aware of an issue that is impacting users logging into web-based applications fr...
about 12 hours
Feb 13, 2025
01:45 PM EST
Major
We are currently investigating an issue causing Admin Panel login and SMS/Phone Call delivery fai...
about 7 hours
Nov 04, 2024
07:24 PM EST
Major
We are currently investigating an issue that is affecting authentication using Yubikey tokens on ...
43 minutes
Jun 14, 2024
01:10 PM EDT
Minor
Duo is investigating an issue with our integration with Microsoft Intune. Customers utilizing Tru...
about 4 hours
Mar 28, 2024
09:14 AM EDT
Major
We are investigating an issue causing blocked authentications in certificate-based Trusted Endpoi...
about 8 hours
Mar 14, 2024
01:35 PM EDT
Minor
We are currently investigating an issue preventing customers from signing up for Duo trial accoun...
about 1 hour
Sep 04, 2023
08:58 AM EDT
Minor
We are currently investigating an issue with SMS and Call delivery issue in the GB region.
about 18 hours
Aug 23, 2023
02:08 PM EDT
Major
We have identified an issue that is causing some users on Android devices to be incorrectly flagg...
about 1 hour
Aug 21, 2023
11:35 AM EDT
Major
We are currently investigating an issue that is causing authentication errors for Azure Condition...
about 2 hours
Sign up to check more outage history
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Core Authentication Service is a component of Cisco Duo that provides multi-factor authentication to verify user identities securely.

Monitoring Cisco Duo since February 2021

Core Authentication Service is part of Cisco Duo. Check the Cisco Duo's status.

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Check their official status page.

3 incidents in 2025

Frequently Asked Questions

Is Cisco Duo Core Authentication Service down today?

Cisco Duo Core Authentication Service isn't down. You can check Cisco Duo Core Authentication Service status and incident details on the top of the page. IsDown continuously monitors Cisco Duo Core Authentication Service official status page every few minutes. In the last 24 hours, there were 0 outages reported.

What is the current Cisco Duo Core Authentication Service status?

Cisco Duo Core Authentication Service is currently operational. You can check Cisco Duo Core Authentication Service 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.

Is there a Cisco Duo Core Authentication Service outage now?

No, there is no ongoing official outage. Check on the top of the page if there are any reported problems by other users.

Is Cisco Duo Core Authentication Service down today or just slow?

Currently there's no report of Cisco Duo Core Authentication Service being slow. Check on the top of the page if there are any reported problems by other users.

How are Cisco Duo Core Authentication Service outages detected?

IsDown monitors the Cisco Duo Core Authentication Service 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.

Is Cisco Duo Core Authentication Service having an outage right now?

Cisco Duo Core Authentication Service last outage was on October 15, 2025 with the title "[All Deployments] Duo Desktop not being recognized on Windows 11 24H2/25H2"

How IsDown compares to DownDetector when monitoring Cisco Duo?

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.

How IsDown works?

  1. IsDown monitors official status pages

    We check the status of the services you're monitoring every few minutes. We aggregate the status and outage information and normalize it. We also collect crowdsourced information to provide early warning signs.

  2. We notify you when there is an outage

    We send you an alert whenever we detect a new incident or an update on the status of the services you're monitoring. You can customize the alerts to your needs to avoid alert fatigue.

  3. Dedicated dashboard and integrations

    Aggregate all the status information in a straightforward dashboard or internal status page. You can also send the information and alerts to your team's communication/monitoring/incident management tools, such as Slack, Datadog, Microsoft Teams, PagerDuty, and more.

Want to be informed about Cisco Duo status changes?

IsDown offers an easy way to monitor Cisco Duo with maximum flexibility

Major Outages Notifications

IsDown monitors Core Authentication Service for major outages. A major outage is when Core Authentication Service experiences a critical issue that severely affects one or more services/regions. When Cisco Duo marks an incident as a major outage, IsDown updates its internal status, the customer status page and dashboard. Depending on the customer settings, IsDown will also send notifications.

Minor Outages Notifications

IsDown monitors Cisco Duo status page for minor outages. A minor outage is when Core Authentication Service experiences a small issue affecting a small percentage of its customer's applications. An example is the performance degradation of an application. When a minor outage occurs, IsDown updates its internal status and shares that information on the customer status page. Depending on the customer settings, IsDown will also send notifications.

Outage Details

IsDown collects all information from the outages published in Cisco Duo status page to provide the most accurate information. 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.

Maintenance Feed

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.

Component Filtering

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.

Early Outage Detection

Cisco Duo and other vendors don't always report outages on time. Our crowdsourced status platform helps you stay ahead of outages. Users report issues and outages, sharing details on what problems they are facing. We use that info to provide early signs of outages. This way, even without an official update, you can stay ahead of possible problems.

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