What is Cisco Duo Core Authentication Service current status?

Cisco Duo Core Authentication Service is currently operational. You can check Cisco Duo Core Authentication Service status and current incidents and outages on the top of the page. The status is updated in almost real-time, and you can see the issues affecting customers.

How to monitor or check Cisco Duo Core Authentication Service status?

You can use IsDown service or go to Cisco Duo official status page. Some accounts also use Twitter to communicate the status.

How can I be notified when Cisco Duo Core Authentication Service is having issues or undergoing maintenance?

You can create an account in IsDown and monitor multiple services or subscribe for updates on the official status page. IsDown will send you a notification in real-time when Cisco Duo Core Authentication Service has issues. Cisco Duo official status page might also offer notification options such as email, SMS, or Slack.

Cisco Duo Core Authentication Service Status. Is Cisco Duo Core Authentication Service Down Right Now?

Q: Is Cisco Duo Core Authentication Service down today?

Cisco Duo Core Authentication Service was not down today according to the official status page. In the last 24 hours, there were 0 outages reported. IsDown continuously monitors the Cisco Duo status page, looking for the latest outages and issues affecting customers. Check all recent outages in the section 'Latest Cisco Duo Core Authentication Service outages, issues and problems' at the top of the page.

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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.

View Cisco Duo Outage Reports Map

Recent Cisco Duo Core Authentication Service Outages and Downtime History

IsDown has tracked 14 incidents for Cisco Duo Core Authentication Service since started monitoring Cisco Duo status in February 2021. We collect data from 4484+ services, and normalize the data to give you a clear picture of the impact of the outage.

Date	Status	Incident	Duration
Aug 29, 2025 07:30 PM CEST	Minor	Blank Duo Prompt issue impacting users authenticating from both Chrome and Edge version 136 brows...	about 12 hours
Feb 13, 2025 07:45 PM CET	Major	All Deployments: Core Authentication Service, Admin Panel logins, Device Management Portal, Risk-...	about 7 hours
Nov 05, 2024 01:24 AM CET	Major	[Federal Deployments] Authentication issues using Yubikey tokens	43 minutes
Jun 14, 2024 07:10 PM CEST	Minor	All Deployments: Endpoints showing untrusted with Microsoft Intune	about 4 hours
Mar 14, 2024 06:35 PM CET	Minor	Trial Account Sign Up Issues	about 1 hour
Sep 04, 2023 02:58 PM CEST	Minor	SMS and Call delivery issue in the Great Britain region	about 18 hours
Aug 23, 2023 08:08 PM CEST	Major	All Deployments: Some Android Devices Erroneously being flagged as Tampered during Auth	about 1 hour
Aug 21, 2023 05:35 PM CEST	Major	Azure Auth authentication errors	about 2 hours
May 03, 2023 10:34 PM CEST	Major	Authentication failures when requiring Duo Device Health App presence	about 5 hours
Feb 06, 2023 01:28 PM CET	Minor	SMS delivery issue in GB region	30 minutes

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Cisco Duo Core Authentication Service problems reported by users

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Core Authentication Service is a component of Cisco Duo that manages user identity verification and secure access control across applications.

Monitoring Cisco Duo since February 2021

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

2 incidents in 2025

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Cisco Duo Core Authentication Service outages in the last 28 days

September 2025

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Number of Incidents

0 issues

Last incident

34 days ago

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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 August 29, 2025 with the title "Blank Duo Prompt issue impacting users authenticating from both Chrome and Edge version 136 browsers and Epic Hyperdrive"

Cisco Duo down for everyone or just me?

Check on the top of the page if there are any reported problems by other users.
Reach out to their Twitter account.
Find their support at their official website.
Find their support contact at their official status page.

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.

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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